CN110585795A - Multilayer backflushing filter and method - Google Patents
Multilayer backflushing filter and method Download PDFInfo
- Publication number
- CN110585795A CN110585795A CN201911028548.6A CN201911028548A CN110585795A CN 110585795 A CN110585795 A CN 110585795A CN 201911028548 A CN201911028548 A CN 201911028548A CN 110585795 A CN110585795 A CN 110585795A
- Authority
- CN
- China
- Prior art keywords
- water
- pipe
- backflushing
- chamber
- communicated
- 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
- 238000000034 method Methods 0.000 title claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 309
- 239000000463 material Substances 0.000 claims abstract description 83
- 238000001914 filtration Methods 0.000 claims abstract description 63
- 239000010865 sewage Substances 0.000 claims abstract description 44
- 238000011001 backwashing Methods 0.000 claims abstract description 27
- 238000004140 cleaning Methods 0.000 claims abstract description 26
- 238000011010 flushing procedure Methods 0.000 claims description 38
- 239000002131 composite material Substances 0.000 claims description 10
- 238000005406 washing Methods 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 abstract description 22
- 239000010410 layer Substances 0.000 description 71
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000007921 spray Substances 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- NRTLIYOWLVMQBO-UHFFFAOYSA-N 5-chloro-1,3-dimethyl-N-(1,1,3-trimethyl-1,3-dihydro-2-benzofuran-4-yl)pyrazole-4-carboxamide Chemical compound C=12C(C)OC(C)(C)C2=CC=CC=1NC(=O)C=1C(C)=NN(C)C=1Cl NRTLIYOWLVMQBO-UHFFFAOYSA-N 0.000 description 1
- 239000006004 Quartz sand Substances 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000003287 bathing Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010612 desalination reaction Methods 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/02—Combinations of filters of different kinds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
The invention discloses a multilayer backflushing filter and a method, the device comprises a tank body, wherein the tank body is internally provided with an upper water chamber, a middle water chamber and a lower water chamber from top to bottom; filter material layers are respectively arranged between the upper water chamber and the middle water chamber and between the middle water chamber and the lower water chamber; the lower water chamber is communicated with a bottom cavity chamber, and the bottom cavity chamber is communicated with a water inlet pipe; the upper water chamber is communicated with a filtering water outlet pipe, the lower part of the filtering water outlet pipe is communicated with a water discharge pipe, the bottom end of the water discharge pipe is communicated with a backflushing water outlet pipe, and the backflushing water outlet pipe is communicated with the bottom cavity chamber; the top of the tank body is provided with a rotating motor which is fixedly connected with a rotating shaft, and the rotating shaft is hollow and communicated with a water sprayer; the bottom end of the rotating shaft is positioned in the positioning sleeve, the positioning sleeve is fixedly connected with the bent pipe, and the bent pipe is communicated with the backflushing water inlet pipe. The method comprises a sewage filtering method, a method of backflushing by using clean water, and a method of backflushing by using sewage itself. According to the invention, the filter materials are arranged in layers and at intervals, so that the filter device has a good filtering effect, a backwashing function and a better cleaning effect.
Description
Technical Field
The present invention relates to filters and methods, and more particularly to a multi-layer backflush filter and method.
Background
The filter material or the filter screen of the existing filter has the defect of single design or difficulty in cleaning, the filtering quality and the operation efficiency are seriously influenced, the filter material or the filter screen is easy to block and needs to be frequently replaced, the manual maintenance cost is improved, the service life of the filter is also influenced, and the replacement operation of the filter material layer is very inconvenient. For example, in the traditional mechanical filter, in order to ensure the filtering effect, a plurality of filter materials are laminated and combined together, the thickness of a filter layer is large, and the backwashing effect is almost not good; like the shallow sand filter popular in recent years, the filter material is single, the filtering precision and the effect are not ideal enough, and meanwhile, the filter layer has poor use effect because only the whole cross section can be washed slowly and the washing quality is poor, so that a larger cross section is often selected for reducing frequent replacement of the filter layer, the size and the floor area of the filter become larger, and the filter is not beneficial to use.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides a multilayer backflushing filter and a method.
In order to solve the technical problems, the invention adopts the technical scheme that: a multilayer backflushing filter comprises a tank body, a bottom cavity chamber, a water inlet pipe, a backflushing bypass channel, a filtering water outlet pipe, a backflushing water outlet pipe, an air inlet pipe and a rotating motor;
the interior of the tank body is provided with an upper water chamber, a middle water chamber and a lower water chamber from top to bottom; a fine filter material layer is arranged between the upper water chamber and the middle water chamber, a coarse filter material layer is arranged between the middle water chamber and the lower water chamber, and a composite screen plate is arranged at the lower end of the coarse filter material layer; the bottom of the lower water chamber is sealed with an end enclosure, and the end enclosure is provided with a limber hole;
the bottom of the tank body is connected with a bottom cavity chamber, the lower water chamber is communicated with the bottom cavity chamber through a water through hole, the bottom cavity chamber is communicated with one end of a water inlet pipe, the other end of the water inlet pipe is provided with a water inlet A, and a water inlet valve is arranged on the water inlet pipe; one side of the upper water chamber is communicated with one end of a filtering water outlet pipe, the other end of the filtering water outlet pipe is provided with a water outlet B, and a water outlet valve is arranged on the filtering water outlet pipe;
the other side of the upper water chamber is communicated with one end of an air inlet pipe, the other end of the air inlet pipe is provided with an air inlet D, and an air control valve is arranged on the air inlet pipe;
the lower part of the filtering water pipe is communicated with a longitudinally arranged drain pipe, an upper drain valve is arranged on the drain pipe, and the upper drain valve is positioned at the joint of the drain pipe and the filtering water pipe; the middle part of the drain pipe is communicated with a branch drain pipe which is communicated with the middle water chamber and is provided with a middle drain valve; the bottom end of the water discharge pipe is communicated with the backflushing water outlet pipe, one end of the backflushing water outlet pipe is communicated with the bottom cavity chamber, the other end of the backflushing water outlet pipe is arranged as a backflushing water outlet, a lower water discharge valve is installed on the backflushing water outlet pipe, and the lower water discharge valve is located at the joint of the backflushing water outlet pipe and the bottom cavity chamber;
the rotating motor is arranged at the top of the tank body and fixedly connected with a rotating shaft, the rotating shaft is hollow, and a water sprayer is communicated with the rotating shaft; the rotating shaft sequentially penetrates through the upper water chamber, the middle water chamber and the lower water chamber and then extends into the bottom cavity chamber; a bent pipe is arranged in the bottom cavity, one end of the bent pipe is fixedly connected with a positioning sleeve, and the bottom end of the rotating shaft is positioned in the positioning sleeve; the other end of the bent pipe extends out of the bottom cavity chamber and is fixedly connected with a bent pipe flange, the bent pipe is communicated with a backflushing water inlet pipe through the bent pipe flange, and a backflushing valve is installed on the backflushing water inlet pipe.
Furthermore, the backflushing valve is communicated with a backflushing by-pass pipe, the backflushing by-pass pipe is communicated with the water inlet pipe, and the joint of the backflushing by-pass pipe and the water inlet pipe is positioned between the water inlet valve and the water inlet A.
Furthermore, at least one water sprayer is arranged in each of the upper water chamber and the middle water chamber.
Furthermore, at least one layer is arranged on each of the fine filter material layer and the coarse filter material layer.
Furthermore, a hand hole is arranged on the tank body, and the hand hole is respectively positioned at the fine filter material layer and the coarse filter material (105).
Furthermore, a pressure sensing part is also arranged on the filtering water outlet pipe.
A working method of a multilayer backflushing filter comprises the following specific steps:
when filtering sewage: opening the water inlet valve and the water outlet valve, and closing other valves; sewage enters from the water inlet A, flows into a bottom cavity chamber of the multilayer backflushing filter through the water inlet pipe, then enters the lower water chamber through the water passing hole, reaches the middle water chamber after being coarsely filtered by the composite screen plate and the coarse filter layer, reaches the upper water chamber after being finely filtered by the fine filter layer, and finally flows out through the filtering water outlet pipe to finish the filtering operation of the sewage;
when the clear water is used for back washing: closing the water inlet valve and the water outlet valve, opening the upper drain valve, the middle drain valve, the lower drain valve and the gas control valve, delaying for several seconds, and freely discharging water in the tank body; then, closing the gas control valve, externally connecting cleaning water by a recoil valve, enabling the cleaning water to flow through the bent pipe through the recoil water inlet pipe and enter an internal cavity of the rotating shaft, enabling the cleaning water to continuously flow from the rotating shaft to the water sprayer, enabling a nozzle of the water sprayer to aim at the filter material layers to spray out, starting the rotating motor, enabling the rotating shaft to rotate, carrying out rotary washing on each filter material layer, and finally discharging the washed water from a recoil water outlet C;
when sewage backwashing is used: when sewage is used for backwashing, a backwashing by-pass pipe is communicated between the backwashing valve and the water inlet pipe; the same as the clear water back flushing, the water is discharged freely; and then, closing the gas control valve, introducing cleaning sewage from the water inlet A, enabling the cleaning sewage to sequentially pass through the backflushing bypass pipe and the backflushing water inlet pipe and then enter the inner cavity of the rotating shaft through the bent pipe, and in the same way, enabling the cleaning sewage to continuously flow from the rotating shaft to the water sprayer, enabling the nozzles of the water sprayer to aim at the filter material layers to be sprayed out, starting the rotating motor, enabling the rotating shaft to rotate, carrying out rotary washing on the filter material layers, and finally discharging the washed water from the backflushing water outlet C.
Further, after water is discharged freely, high-pressure air flushing operation is carried out, and then back flushing is carried out by clear water or sewage; the process of the high-pressure gas flushing operation is as follows: closing the upper drainage valve, introducing high-pressure gas from the gas inlet D through the gas inlet pipe, and enabling the high-pressure gas to penetrate through the fine filter material layer, the coarse filter material layer and the composite screen plate so as to perform gas flushing; after the gas flushing is finished, the gas control valve is closed, and the subsequent clear water or sewage backwashing is carried out.
The multilayer backflushing filter disclosed by the invention has the advantages that the filter material layers are arranged in a layered and spaced manner, the filtering effect is good, the cross section of the filter material is appropriate, and the size of the filter is reduced; meanwhile, the multi-layer back-flushing filter can realize the back-flushing function, the rotating shaft drives the water sprayer to realize omnibearing rotary spray washing, the filter material layer is intensively flushed, the back-flushing penetrating effect is better, the filter material layer is prevented from being blocked, the filter material layer does not need to be frequently replaced while the filtering effect is improved, the service life of the filter is effectively prolonged, and the maintenance cost is also reduced. The method disclosed by the invention comprises a sewage filtering method and a back washing method, not only has a high-quality filtering effect, but also can realize an excellent back washing effect.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a front view of fig. 1.
Fig. 3 is a structural sectional view of a front view of the present invention.
Fig. 4 is a top view of fig. 1.
FIG. 5 is a schematic view of a connection structure of the rotating shaft and the elbow pipe according to the present invention.
In the figure: 1. a tank body; 2. a bottom cavity chamber; 3. a water inlet pipe; 4. a water inlet valve; 5. a water inlet pipe is backflushed; 6. a recoil valve; 7. a water outlet pipe is filtered; 8. a water outlet valve; 9. a drain pipe; 10. a branch drain pipe; 11. a middle drain valve; 12. an upper drainage valve; 13. back flushing the water outlet pipe; 14. a lower drain valve; 15. hand hole; 16. a rotating electric machine; 17. an air inlet pipe; 18. an air intake control valve; 19. a recoil bypass pipe; 20. a rotating shaft; 21. a water sprayer; 22. bending the pipe; 23. a positioning sleeve; 24. a bent pipe flange; 25. a pressure sensing component; 101. a water feeding chamber; 102. a middle water chamber; 103. a water discharging chamber; 104. a fine filter material layer; 105. a coarse filter material layer; 106. compounding the screen plate; 107. water through hole
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
A multilayer backflushing filter is shown in figures 1 and 2, and comprises a tank body 1, a bottom cavity chamber 2, a water inlet pipe 3, a backflushing bypass channel 5, a filtered water outlet pipe 7, a backflushing water outlet pipe 13, an air inlet pipe 17 and a rotating motor 16;
as shown in fig. 3, the tank 1 is internally provided with an upper water chamber 101, a middle water chamber 102 and a lower water chamber 103 from top to bottom; a fine filter material layer 104 is arranged between the upper water chamber 101 and the middle water chamber 102 to perform fine filtration on sewage; a coarse filter material layer 105 is arranged between the middle water chamber 102 and the lower water chamber 103, the lower end of the coarse filter material layer 105 is provided with a composite screen 106, and the composite screen 106 and the coarse filter material layer 105 are matched together to perform coarse filtration on sewage; an end enclosure is sealed at the bottom of the lower water chamber 103, and a water through hole 107 is formed in the end enclosure; the bottom of the tank body 1 is connected with a bottom cavity chamber 2, a lower water chamber 103 is communicated with the bottom cavity chamber 2 through a water through hole 107, the bottom cavity chamber 2 is communicated with one end of a water inlet pipe 3, the other end of the water inlet pipe 3 is provided with a water inlet A, and the water inlet pipe 3 is provided with a water inlet valve 4; one side of the upper water chamber 101 at the upper part is communicated with one end of the filtering water pipe 7, the other end of the filtering water pipe 7 is provided with a water outlet B, and a water outlet valve 8 is arranged on the filtering water pipe 7; therefore, the sewage reaches the bottom cavity chamber 2 through the water inlet pipe 3, enters the lower water chamber 103 through the water through hole 107, and is discharged from the filtering water pipe 7 after being subjected to coarse filtering and fine filtering in sequence.
The filtering layers are arranged in a layered and spaced mode, so that multi-layer filtering of multi-sewage is realized, and the filtering effect is better; the coarse filtering layer and the fine filtering layer can be respectively provided with one layer or a plurality of layers, and the plurality of layers of coarse filtering layers and fine filtering layers can realize higher filtering precision. Meanwhile, the sectional area of the filter layer does not need to be excessively increased, so that the use cost of the filter material is reduced, the size of the filter is effectively reduced, the occupied area of the filter is reduced, and the filter is more convenient to use; in addition, a plurality of water through holes are formed in the end socket of the lower water chamber 103, so that water can be distributed to the filter material layer more uniformly, and the filtering effect is improved.
The fine filter material layer 104 and the coarse filter material layer 105 both adopt single type filter materials, and mixed filter materials do not exist, so that the adjustment of the filter material layers is facilitated; the filter material is usually made of materials such as quartz stone, quartz sand, sea sand and the like, but is not limited to the concentrated materials, and only a single type of filter material is selected as the filter layer; meanwhile, a hand hole 15 is formed in the tank body 1, and the hand hole 15 is respectively positioned at the fine filter material layer 104 and the coarse filter material layer 105, so that the fine filter material layer 104 and the coarse filter material layer 105 can be conveniently replaced through the hand hole; through the hand hole, still be convenient for stir not hard up filtering material layer to prevent that filtering material layer from hardening, can further improve the filter effect.
The multilayer backwashing filter disclosed by the invention has a backwashing function under the function of filtering sewage with high quality, and the specific structure is as follows:
the other side of the upper part of the upper water chamber 101 is communicated with one end of an air inlet pipe 17, the other end of the air inlet pipe 17 is provided with an air inlet D, and the air inlet pipe 17 is provided with an air control valve 18; high-pressure gas can be introduced into the gas inlet D to realize gas flushing of the filter material layer;
the lower part of the filtered water pipe 7 is communicated with a longitudinally arranged drain pipe 9, an upper drain valve 12 is arranged on the drain pipe 9, and the upper drain valve 12 is positioned at the joint of the drain pipe 9 and the filtered water pipe 7; the middle part of the drain pipe 9 is communicated with a branch drain pipe 10, the branch drain pipe 10 is communicated with the middle water chamber 102, and a middle drain valve 11 is arranged on the branch drain pipe 10; the bottom end of the drain pipe 9 is communicated with a backflushing water outlet pipe 13, one end of the backflushing water outlet pipe 13 is communicated with the bottom cavity chamber 2, the other end of the backflushing water outlet pipe 13 is provided with a backflushing water outlet C, a lower drain valve 14 is installed on the backflushing water outlet pipe 13, and the lower drain valve 14 is located at the joint of the backflushing water outlet pipe 13 and the bottom cavity chamber 2; the upper, middle and lower water chambers respectively correspond to a drain valve, so that the back washing is convenient to regulate and control;
meanwhile, in order to further improve the back washing effect, a rotating motor 16 is arranged at the top of the tank body 1, the rotating motor 16 is fixedly connected with a rotating shaft 20, the rotating shaft 20 is hollow, and a water sprayer 21 is communicated with the rotating shaft 20; thereby the rotating shaft 20 drives the water sprayer 21 to rotate to spray cleaning water, and better back flushing cleaning effect is realized;
the rotating shaft 20 sequentially penetrates through the upper water chamber 101, the middle water chamber 102 and the lower water chamber 103 and then extends into the bottom cavity chamber 2; as shown in fig. 5, a bent pipe 22 is arranged in the bottom cavity 2, one end of the bent pipe 22 is fixedly connected with a positioning sleeve 23, and the bottom end of the rotating shaft 20 is positioned in the positioning sleeve 23; the other end of the elbow 22 extends out of the bottom cavity 2 and is fixedly connected with an elbow flange 24, and the elbow 22 is fixedly welded on the wall of the bottom cavity 2; meanwhile, the bent pipe 22 is communicated with a backflushing water inlet pipe 5 through a bent pipe flange 24, and a backflushing valve 6 is installed on the backflushing water inlet pipe 5; therefore, the washing water enters through the backwash water pipe 5, passes through the trap 22 and the rotary shaft 20 in this order, and is ejected from the water jet 21 to be washed. The cleaned water flows out of each drain valve and is finally discharged from the backflushing water outlet C.
Usually, when the back washing is carried out by adopting clean water, the clean water directly enters from the back washing water pipe 5; if sewage is adopted for back flushing, because the sewage enters from the water inlet A, a back flushing by-pass pipe 19 needs to be additionally arranged at the moment, as shown in figure 4, one end of the back flushing by-pass pipe 19 is communicated with the back flushing valve 6, the other end of the back flushing by-pass pipe 19 is communicated with the water inlet pipe 3, and the joint of the back flushing by-pass pipe 19 and the water inlet pipe 3 is positioned between the water inlet valve 4 and the water inlet A; at this time, the water inlet valve is closed, and the sewage for back flushing can enter the back flushing water inlet pipe 5 from the back flushing bypass pipe 19, so that the subsequent back flushing operation is completed.
For the water sprayer 21, the water sprayers are distributed in the upper water chamber 101 and the middle water chamber 102 and respectively correspond to the fine filter material layer and the coarse filter material layer, so that the rotary cleaning of each filter layer is realized, and the back washing effect is improved. One or more water sprayers can be arranged in the water chambers 101 and 102, and the water sprayers are selected according to the cleaning requirement. Meanwhile, the coarse filter material layer and the fine filter material layer are arranged in a layered mode, so that the thickness of a single-layer filter material is reduced, the penetrating effect of backwashing is good, and the flushing effect is improved to a certain extent.
In addition, for the determination of the back flushing time, a pressure sensing component 26, such as an electric contact pressure gauge, a pressure sensor and the like, can be arranged on the filtering water outlet pipe 7, the filter is operated after a new filtering material is filled, the pressure value at the moment is observed, a certain numerical value is adjusted up and down to be used as the pressure set value of automatic back flushing, and a PLC control system is adopted to realize the electric control of each valve according to whether the pressure change of the water outlet reaches the pressure set value.
The invention also discloses a working method of the multilayer backflushing filter, which comprises the following steps:
when filtering sewage: opening the water inlet valve and the water outlet valve, and closing other valves; sewage enters from the water inlet A, flows into a bottom cavity chamber of the multilayer backflushing filter through the water inlet pipe, then enters the lower water chamber through the water passing hole, reaches the middle water chamber after being coarsely filtered by the composite screen plate and the coarse filter layer, reaches the upper water chamber after being finely filtered by the fine filter layer, and finally flows out through the filtering water outlet pipe to finish the filtering operation of the sewage;
when the clear water is used for back washing: closing the water inlet valve and the water outlet valve, opening the upper water discharge valve, the middle water discharge valve, the lower water discharge valve and the gas control valve, delaying for several seconds, and freely discharging water in the tank body so as to directly impact the residual deep sewage in the filtering process to the surface of the filtering layer; then, closing the gas control valve, externally connecting cleaning water by a recoil valve, enabling the cleaning water to flow through the bent pipe through the recoil water inlet pipe and enter an internal cavity of the rotating shaft, enabling the cleaning water to continuously flow from the rotating shaft to the water sprayer, enabling a nozzle of the water sprayer to aim at the filter material layers to spray out, starting the rotating motor, enabling the rotating shaft to rotate, carrying out rotary washing on each filter material layer, and finally discharging the washed water from a recoil water outlet C;
when sewage backwashing is used: a recoil bypass pipe is communicated between the recoil valve and the water inlet pipe; the same as the clear water back flushing, the water is discharged freely; and then, closing the gas control valve, introducing cleaning sewage from the water inlet A, enabling the cleaning sewage to sequentially pass through the backflushing bypass pipe and the backflushing water inlet pipe and then enter the inner cavity of the rotating shaft through the bent pipe, and in the same way, enabling the cleaning sewage to continuously flow from the rotating shaft to the water sprayer, enabling the nozzles of the water sprayer to aim at the filter material layers to be sprayed out, starting the rotating motor, enabling the rotating shaft to rotate, carrying out rotary washing on the filter material layers, and finally discharging the washed water from the backflushing water outlet C.
Under the condition of having a high-pressure air source, in order to further provide a backwashing effect, after water is freely discharged, high-pressure air flushing operation is carried out, and then backwashing by clear water or sewage is carried out; the hardened filter material can be scattered by high-pressure air washing, so that the subsequent cleaning effect can be improved; the process of the high-pressure gas flushing operation is as follows: closing the upper drainage valve, introducing high-pressure gas from the gas inlet D through the gas inlet pipe, and enabling the high-pressure gas to penetrate through the fine filter material layer, the coarse filter material layer and the composite screen plate so as to perform gas flushing; after the gas flushing is finished, the gas control valve is closed, and the subsequent clear water or sewage backwashing is carried out.
The invention discloses a multilayer backflushing filter and a method, which can be widely applied to the fields of environmental protection water treatment, seawater desalination, bathing, printing and dyeing and the like, and compared with the existing filter, the multilayer backflushing filter has the following advantages: (1) the coarse filter material layer and the fine filter material layer are layered and arranged at intervals, so that multi-layer filtration of sewage is realized, the filtering effect is good, meanwhile, the thickness of a single-layer filter material is small, and the through effect of back-flushing cleaning is good; (2) each layer of filter material has single component, and the filter material can be conveniently stirred through the hand holes, so that hardening is prevented, the filtering effect is improved, or the filter material is adjusted and replaced, and the operation is simpler and more convenient; (3) the volume of the filter is obviously reduced, the used filter material is reduced, the utilization rate of the filter material is improved, and the maintenance cost is greatly reduced; (4) the sewage can be adopted for back flushing, and under the condition of condition limitation, the cleaner sewage can be adopted for back flushing, so that the adaptability of the filter is improved.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (8)
1. A multilayer backflushing filter, includes a jar body (1), its characterized in that: the device also comprises a bottom cavity chamber (2), a water inlet pipe (3), a backflushing bypass channel (5), a filtering water outlet pipe (7), a backflushing water outlet pipe (13), an air inlet pipe (17) and a rotating motor (16);
the interior of the tank body (1) is provided with an upper water chamber (101), a middle water chamber (102) and a lower water chamber (103) from top to bottom; a fine filter material layer (104) is arranged between the upper water chamber (101) and the middle water chamber (102), a coarse filter material layer (105) is arranged between the middle water chamber (102) and the lower water chamber (103), and a composite screen plate (106) is arranged at the lower end of the coarse filter material layer (105); an end enclosure is sealed at the bottom of the lower water chamber (103), and a water through hole (107) is formed in the end enclosure;
the bottom of the tank body (1) is connected with a bottom cavity chamber (2), a lower water chamber (103) is communicated with the bottom cavity chamber (2) through a water through hole (107), the bottom cavity chamber (2) is communicated with one end of a water inlet pipe (3), the other end of the water inlet pipe (3) is provided with a water inlet A, and the water inlet pipe (3) is provided with a water inlet valve (4); one side of the upper water chamber (101) at the upper part is communicated with one end of a filtering water outlet pipe (7), the other end of the filtering water outlet pipe (7) is provided with a water outlet B, and a water outlet valve (8) is arranged on the filtering water outlet pipe (7);
the other side of the upper water chamber (101) at the upper part is communicated with one end of an air inlet pipe (17), the other end of the air inlet pipe (17) is provided with an air inlet D, and an air control valve (18) is installed on the air inlet pipe (17);
the lower part of the filtering water outlet pipe (7) is communicated with a longitudinally arranged drain pipe (9), an upper drain valve (12) is arranged on the drain pipe (9), and the upper drain valve (12) is positioned at the joint of the drain pipe (9) and the filtering water outlet pipe (7); the middle part of the drain pipe (9) is communicated with a branch drain pipe (10), the branch drain pipe (10) is communicated with the middle water chamber (102), and a middle drain valve (11) is arranged on the branch drain pipe (10); the bottom end of the drain pipe (9) is communicated with a backflushing water outlet pipe (13), one end of the backflushing water outlet pipe (13) is communicated with the bottom cavity chamber (2), the other end of the backflushing water outlet pipe (13) is set as a backflushing water outlet C, a lower drain valve (14) is installed on the backflushing water outlet pipe (13), and the lower drain valve (14) is located at the connection position of the backflushing water outlet pipe (13) and the bottom cavity chamber (2);
the rotary motor (16) is arranged at the top of the tank body (1), the rotary motor (16) is fixedly connected with a rotating shaft (20), the rotating shaft (20) is hollow, and a water sprayer (21) is communicated with the rotating shaft (20); the rotating shaft (20) sequentially penetrates through the upper water chamber (101), the middle water chamber (102) and the lower water chamber (103) and then extends into the bottom cavity chamber (2); a bent pipe (22) is arranged in the bottom cavity (2), one end of the bent pipe (22) is fixedly connected with a positioning sleeve (23), and the bottom end of the rotating shaft (20) is positioned in the positioning sleeve (23); the other end of the bent pipe (22) extends to the outside of the bottom cavity chamber (2) and is fixedly connected with a bent pipe flange (24), the bent pipe (22) is communicated with a backflushing water inlet pipe (5) through the bent pipe flange (24), and the backflushing water inlet pipe (5) is provided with a backflushing valve (6).
2. The multi-layer backflushing filter according to claim 1 wherein: the recoil valve (6) is communicated with a recoil bypass pipe (19), the recoil bypass pipe (19) is communicated with the water inlet pipe (3), and the joint of the recoil bypass pipe (19) and the water inlet pipe (3) is positioned between the water inlet valve (4) and the water inlet A.
3. The multilayer backflushing filter according to claim 1 or 2, wherein: at least one water sprayer is arranged in each of the upper water chamber (101) and the middle water chamber (102).
4. The multi-layer backflushing filter according to claim 3 wherein: the fine filter material layer (104) and the coarse filter material layer (105) are respectively provided with at least one layer.
5. The multi-layer backflushing filter according to claim 4 wherein: the tank body (1) is provided with a hand hole (15), and the hand hole (15) is respectively positioned at the fine filter material layer (104) and the coarse filter material layer (105).
6. The multi-layer backflushing filter according to claim 5 wherein: and a pressure sensing part (25) is also arranged on the filtering water outlet pipe (7).
7. A working method of a multilayer backflushing filter is characterized in that: the working method specifically comprises the following steps:
when filtering sewage: opening the water inlet valve (4) and the water outlet valve (8), and closing other valves; sewage enters from the water inlet A, flows into a bottom cavity chamber (2) of the multilayer backflushing filter through the water inlet pipe (3), then enters into the lower water chamber (103) through the water through holes (107), is coarsely filtered by the composite screen plate (106) and the coarse filtering layer (105) and then reaches into the middle water chamber (102), is finely filtered by the fine filtering layer (104) and then reaches the upper water chamber (101), and finally, the filtered sewage flows out through the filtering water outlet pipe (7) to finish the filtering operation of the sewage;
when the clear water is used for back washing: closing the water inlet valve (4) and the water outlet valve (8), opening the upper drain valve (12), the middle drain valve (11), the lower drain valve (14) and the gas control valve (18), delaying for several seconds, and freely discharging water in the tank body (1); then, the gas control valve (18) is closed, cleaning water is externally connected with the backflushing valve (6), the cleaning water flows through the bent pipe (22) through the backflushing water inlet pipe (5) and enters the inner cavity of the rotating shaft (20), the cleaning water continuously flows to the water sprayer (21) through the rotating shaft (20), the nozzle of the water sprayer (21) is aligned with the filter material layer to be sprayed out, at the moment, the rotating motor (16) is started, the rotating shaft (20) starts to rotate, each filter material layer is subjected to rotary washing, and the washed water is finally discharged from the backflushing water outlet C;
when sewage backwashing is used: a recoil bypass pipe (19) is communicated between the recoil valve (6) and the water inlet pipe (3); the same as the clear water back flushing, the water is discharged freely; then, the gas control valve (18) is closed, cleaning sewage is introduced from the water inlet A, the cleaning sewage sequentially passes through the backflushing bypass pipe (19) and the backflushing water inlet pipe (5) and then enters the inner cavity of the rotating shaft (20) through the bent pipe (22), similarly, the cleaning sewage continuously enters the water sprayer (21) through the rotating shaft (20), the nozzle of the water sprayer (21) is aligned with the filter material layer to be sprayed out, at the moment, the rotating motor (16) is started, the rotating shaft (20) starts to rotate, each filter material layer is rotationally washed, and finally the washed water is discharged from the backflushing water outlet C.
8. The method of operating a multilayer backflush filter of claim 7, wherein: after the water is discharged freely, performing high-pressure air flushing operation, and then performing backwashing by using clear water or sewage; the process of the high-pressure gas flushing operation is as follows: closing the upper drainage valve (12), introducing high-pressure gas from the gas inlet D through the gas inlet pipe (17), and enabling the high-pressure gas to penetrate through the fine filter material layer (104), the coarse filter material layer (105) and the composite screen plate (106) to perform gas flushing; after the gas flushing is finished, the gas control valve (18) is closed, and the subsequent clear water or sewage backwashing is carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028548.6A CN110585795A (en) | 2019-10-28 | 2019-10-28 | Multilayer backflushing filter and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911028548.6A CN110585795A (en) | 2019-10-28 | 2019-10-28 | Multilayer backflushing filter and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110585795A true CN110585795A (en) | 2019-12-20 |
Family
ID=68851582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911028548.6A Pending CN110585795A (en) | 2019-10-28 | 2019-10-28 | Multilayer backflushing filter and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110585795A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692367A (en) * | 2020-06-11 | 2020-09-22 | 盐城欧润石化设备制造有限公司 | Back flush valve with cleaning assembly |
| CN112794498A (en) * | 2020-12-28 | 2021-05-14 | 中科洁力（福州）环保技术有限公司 | Intelligent efficient water purification system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203451312U (en) * | 2013-08-16 | 2014-02-26 | 四川力仁建筑工程有限公司 | Industrial sewage treatment device |
| CN207886764U (en) * | 2018-01-09 | 2018-09-21 | 中山市比斯坦环保科技有限公司 | A kind of Buddha's warrior attendant sand filter |
| CN211273856U (en) * | 2019-10-28 | 2020-08-18 | 张玉华 | Multilayer back-flushing filter |
-
2019
- 2019-10-28 CN CN201911028548.6A patent/CN110585795A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203451312U (en) * | 2013-08-16 | 2014-02-26 | 四川力仁建筑工程有限公司 | Industrial sewage treatment device |
| CN207886764U (en) * | 2018-01-09 | 2018-09-21 | 中山市比斯坦环保科技有限公司 | A kind of Buddha's warrior attendant sand filter |
| CN211273856U (en) * | 2019-10-28 | 2020-08-18 | 张玉华 | Multilayer back-flushing filter |
Non-Patent Citations (2)
| Title |
|---|
| 北京工业大学编: "《全国勘察设计注册设备工程师专业考试复习教程 给水排水专业》", 中国建筑工业出版社 * |
| 北京水环境技术与设备研究中心等主编: "《三废处理工程技术手册 废水卷》", 30 April 2000, 化学工业出版社 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111692367A (en) * | 2020-06-11 | 2020-09-22 | 盐城欧润石化设备制造有限公司 | Back flush valve with cleaning assembly |
| CN111692367B (en) * | 2020-06-11 | 2021-12-14 | 盐城欧润石化设备制造有限公司 | Back flush valve with cleaning assembly |
| CN112794498A (en) * | 2020-12-28 | 2021-05-14 | 中科洁力（福州）环保技术有限公司 | Intelligent efficient water purification system |
| CN112794498B (en) * | 2020-12-28 | 2022-08-30 | 中科洁力（福州）环保技术有限公司 | Intelligent efficient water purification system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203400540U (en) | Turnover plate filter tank with upward flow function | |
| CN211097825U (en) | Oil field water injection recoil type filtering dirt remover | |
| CN112225362B (en) | Integrated water-saving full-house water purifying equipment | |
| CN110585795A (en) | Multilayer backflushing filter and method | |
| US20080245722A1 (en) | Wastewater filtering apparatus | |
| CN211273856U (en) | Multilayer back-flushing filter | |
| CN208927720U (en) | Automatic backwash basket filter | |
| CN208493431U (en) | Mixing wastewater with air backwash automatic cleaning lamination filter | |
| CN110613972A (en) | Back-washing pre-filter | |
| CN100384505C (en) | Intelligent differential pressure type filter capable of cleaning filter core by high-pressure water | |
| JP2008272735A (en) | Filtration apparatus and regeneration method of tubular element | |
| CN202438208U (en) | Self-cleaning filter | |
| CN116966656A (en) | Automatic detection and cleaning device for pipeline water delivery and distribution | |
| CN207680178U (en) | Convenient for the filtering tank of discharging cleaning | |
| CN201124051Y (en) | Automatic backwashing device | |
| CN113943060A (en) | Integrated environment-friendly water purification process for high-rise building | |
| CN210845485U (en) | Spiral-flow type backwashing filter | |
| CN206008190U (en) | Multicarity big flow hydro powered well strainer | |
| CN206008148U (en) | Waterpower torsion couple automatic cleaning screen filter | |
| JP4110624B2 (en) | Water purification system | |
| CN219261302U (en) | Prefabricated pump station of automatically cleaning silt formula integration | |
| CN201353457Y (en) | Online bidirectional automatic backwashing filter device | |
| CN104436842B (en) | Sandstone screen cloth integrated reverse cleaning and filtrating equipment | |
| CN110180238B (en) | Backwash water quality filter | |
| CN204293990U (en) | Sandstone screen cloth integrated reverse cleaning and filtrating equipment |
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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191220 |