CN110975379A - Full-automatic back-washing precision filter - Google Patents
Full-automatic back-washing precision filter Download PDFInfo
- Publication number
- CN110975379A CN110975379A CN201911256487.9A CN201911256487A CN110975379A CN 110975379 A CN110975379 A CN 110975379A CN 201911256487 A CN201911256487 A CN 201911256487A CN 110975379 A CN110975379 A CN 110975379A
- Authority
- CN
- China
- Prior art keywords
- filter
- water
- tank body
- jar body
- filter element
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Classifications
-
- 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
- B01D33/067—Construction of the filtering drums, e.g. mounting or sealing arrangements
-
- 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
- B01D33/48—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D33/50—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps with backwash arms, shoes or nozzles
-
- 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
- B01D33/70—Filters with filtering elements which move during the filtering operation having feed or discharge devices
- B01D33/76—Filters with filtering elements which move during the filtering operation having feed or discharge devices for discharging the filter cake, e.g. chutes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/80—Accessories
- B01D33/801—Driving means, shaft packing systems or the like
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/08—Seawater, e.g. for desalination
Abstract
The invention relates to the technical field of seawater desalination, and discloses a full-automatic backwashing precision filter which comprises a tank body, wherein the tank body comprises a water inlet cavity at the top and a water outlet cavity at the bottom, a water inlet is formed in the top of one side of the tank body, a water outlet is formed in the bottom of one side of the tank body, a sewage discharge outlet is formed in the bottom of the tank body, a controller is fixedly installed on the other side of the tank body, an upper sealing disc is fixedly installed at the top end of the inside of the tank body, a lower sealing disc is fixedly installed at the bottom end of the inside of the tank body, a water overflowing pipe is arranged on one side of the inside of the tank body, electromagnetic valves are fixedly installed at the top end of the upper sealing disc and the bottom of the lower sealing. Through top-down's filtration mode, and will filter the water direct discharge, improved filtration efficiency and prevented that the local filter residue of filter core is too much, drive water through the pivoted filter core and rotate, improve the effect of back flush.
Description
Technical Field
The invention relates to the technical field of seawater desalination, in particular to a full-automatic backwashing precision filter.
Background
Sea water desalination, namely, sea water desalination is utilized to produce fresh water, desalination by a reverse osmosis membrane method which is frequently adopted at present needs to carry out precise filtration on pretreated sea water, and the working principle of a full-automatic back-flushing precise filter is as follows: referring to the attached figure 7 of the specification, pretreated seawater enters from a water inlet at the lower end of one side of a tank body of a precision filter, is filtered by a filter element in the tank body, and then is discharged from a water outlet at the upper end of the other side of the tank body (the seawater is filtered by pressure difference between the inner side and the outer side of the filter element, and the pressure in the filter element is higher than the external pressure); the filter residue that gets off by the filtration accumulates in the inboard of filter core in filterable time, just need clear up the filter residue after the filter residue accumulation a lot makes the inside and outside pressure differential of filter core reach a definite value, the side back flush of filtration limit can be realized to the full-automatic back flush of adoption, it makes its inside intercommunication air to drive the blow off pipe through the motor and aim at a filter core that needs the blowdown during back flush, other filter cores are still filtering simultaneously, it has water outflow always to keep the delivery port, will produce the negative pressure behind the inside intercommunication air of filter core (filter core internal pressure is less than external pressure), thereby let the water after the filtration reverse infiltration filter core wash inside adnexed filter residue, wash the next filter core in proper order again after finishing washing one filter core and finish up to.
And (3) filtering:
1. the inside and the outside of the filter element are immersed in water, and external water pressure directly acts on the filter element, so that the pressure difference between the inside and the outside of the filter element is not obvious, and the filtering efficiency of seawater is influenced.
2. The water outlet of the automatic back-flushing precision filter is arranged on one side, the water flow close to the water outlet is high (the flow rate is higher, the pressure is lower), the internal and external pressure difference of the filter element at the position is larger, so that the filtering speed of the filter element close to the water outlet is accelerated, more filter residues are accumulated, the part of the filter element far away from the water outlet is filtered slowly, the accumulation of the filter residues is less, the local filter residue accumulation is too high, the integral filtering efficiency is influenced, and the service life of the filter element is also greatly influenced.
3. The structure of the existing automatic back-flushing precision filter divides the whole tank body into an upper part and a lower part, the filter element is internally communicated with a water inlet cavity, so that part of filter residues accumulated in the filter element falls into the water inlet cavity, the accumulation of the filter residues in the water inlet cavity is more after a long time, and the filter time is increased and the blockage of the filter element is accelerated by filtering through the filter element again after the filter residues are mixed with seawater at a water inlet.
A backwashing process:
4. when the automatic back-flushing precision filter performs back flushing, the automatic back-flushing precision filter performs filtering and back flushing simultaneously, so that the water flow close to the water outlet part is fast (the flow rate is higher, the pressure intensity is lower), the pressure on the filter element at the part is lower, the back-flushing effect close to the water outlet part is greatly reduced, more filter residues are accumulated at the part close to the water outlet, the filter residue cleaning effect at the part is reduced, and the back-flushing efficiency is continuously influenced while the back-flushing effect is reduced.
5. During backwashing, filter residues are cleaned by adopting the pressure of water filled in the tank body, and because the filter elements are fixedly arranged in the filter, the filtered water is basically kept still in the water outlet cavity, so that backwashing is carried out only by the negative pressure in the filter elements, the interior of the filter elements needs to be flushed clean, the required time is longer, and the backwashing effect is poor.
Disclosure of Invention
Aiming at the defects of the background technology, the invention provides a full-automatic backwashing precision filter which has the advantages of high filtering efficiency and good backwashing effect, and solves the problems in the background technology.
The invention provides the following technical scheme: the utility model provides a full-automatic back flush precision filter, includes a jar body, the internal portion of jar is including the water inlet cavity that is located the top and the play water cavity of bottom, the water inlet has been seted up at the top of jar body one side, the delivery port has been seted up to the bottom of jar body one side, the drain has been seted up to the bottom of jar body, the opposite side fixed mounting of the jar body has the controller, the top fixed mounting of the internal portion of jar has a top seal dish, the bottom fixed mounting of the internal portion of jar has a lower seal dish, the water pipe that overflows has been seted up to one side of the internal portion of jar, the top of top seal dish with the bottom fixed mounting of lower seal dish has the solenoid valve, top.
Preferably, go up the closing disc with the closing disc passes through bearing swing joint filter core down, the outer lane of bearing adopts the interference fit joint to install on last closing disc and the closing disc down, the inner circle fixed connection filter core of bearing.
Preferably, the bottom of the filter element is fixedly provided with a screw rod, and the bottom end of the screw rod is fixedly arranged on the lower end cover of the filter element.
Preferably, the water inlet and the water inlet cavity of the tank body are tangentially arranged.
Preferably, the top level of the water overflowing pipe is higher than the top end of the filter element by a certain distance.
The invention has the following beneficial effects:
1. through top-down's filtration mode, the water that has filtered is discharged from the delivery port fast, and the outside of filter core does not have the volume and deposits water, and the filter core outside also can not receive the backpressure of water, compares in prior art, and its filter core receives inside water pressure all the time, and outside no pressure offsets, has improved the interior outer differential pressure of filter core for the filtration efficiency of whole filter core obtains improving.
2. Through the water that has filtered the filter core directly discharging, can not fill water in the play water cavity, the filtration of each position of filter core only can receive inside hydraulic influence, compare in the filtering process of current design filter core, the filter core outside can not have the influence of drainage rivers (rivers have reduced the outside water pressure of filter core), the water pressure that the filter core received is certain, the filter residue adheres to the accumulation degree just also the same, can not give birth to too much influence filter core use of local filter residue, many have been improved to filter core life, and the even back flush that also does benefit to of filter residue accumulation.
3. Through setting up the water inlet cavity at the top, on the filter core was not adsorbed to the partial filter residue of accumulation in filtering, can fall and gather the filter core bottom, compare in prior art, the filter residue of falling the filter core bottom can directly be discharged from the blowdown intracavity when opening the bottom solenoid valve, can not cause partial filter residue to fall into the water inlet cavity and make the turbidity of sea water increase to reduce follow-up filtration efficiency.
4. Through closing the delivery port during back flush, too much water can be discharged from the overflow pipe communicated with the top of the water outlet cavity, and the back flush while filtering can still be carried out, compared with the back flush by the existing side drainage, no water flowing to the delivery port exists on the side edge of the filter element (the flow rate can greatly reduce the water pressure), so that the external water pressure of the filter element close to the delivery port can not be reduced, the water pressure outside the filter element is kept consistent, the flushing degree of filter residues in the filter element during the back flush is the same, the subsequent filtering efficiency is improved, and the service life is prolonged.
5. Through the setting of hob, make it when intaking, it rotates to drive the filter core, thereby further drive the outside rivers of filter core and have local rotation, this kind of design of technical scheme, compare in current filter core structure setting, it is carrying out the back flush in-process, the outside rivers of filter core have certain kinetic energy, under the inside equal negative pressure condition of filter core, this technical scheme's advantage lies in, the outside rivers of its filter core itself has certain impact force to the filter core, in addition, the effect of negative pressure, act on the filter core simultaneously, the filter residue impact effect of its rivers to the inside adhesion of filter core is strengthened, make the effect of going of filter residue obtain the promotion.
Drawings
FIG. 1 is a general view of the structure of the present invention;
FIG. 2 is a partial cross-sectional view of the structure of the present invention;
FIG. 3 is a half sectional view of the structure of the present invention;
FIG. 4 is an exploded view of the cartridge installation of the present invention;
FIG. 5 is an exploded view of the filter element construction of the present invention;
FIG. 6 is a half sectional view of a filter cartridge arrangement of the present invention;
fig. 7 is a schematic diagram of a conventional full-automatic backwashing precision filter.
In the figure: 1. a tank body; 2. a water inlet; 3. a water outlet; 4. a sewage draining outlet; 5. a controller; 6. a filter element; 601. a framework; 602. a filtering layer; 603. a metal mesh; 604. an upper end cover; 605. a lower end cover; 7. a drive motor; 8. an upper sealing disc; 9. a lower sealing disc; 10. a screw rod; 11. a bearing; 12. an electromagnetic valve; 13. the water pipe overflows.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, a full-automatic backwashing precision filter comprises a tank body 1, wherein the tank body 1 comprises a water inlet cavity at the top and a water outlet cavity at the bottom, a water inlet 2 is arranged at the top of one side of the tank body 1, a water outlet 3 is arranged at the bottom of one side of the tank body 1, a sewage outlet 4 is arranged at the bottom of the tank body 1, a controller 5 is fixedly arranged at the other side of the tank body 1, an upper sealing disc 8 is fixedly arranged at the top end of the tank body 1, a lower sealing disc 9 is fixedly arranged at the bottom end of the tank body 1, a water overflowing pipe 13 is arranged at one side of the tank body 1, electromagnetic valves 12 are fixedly arranged at the top end of the upper sealing disc 8 and the bottom of the lower sealing disc 9, and a.
Wherein, bearing 11's outer lane fixed joint is in the closing disc, and inner circle fixedly connected with filter core 6 makes its spiral rotate through hob 10 at filter process rivers, because hob 10 fixed mounting is on filter core 6, because bearing 11's existence, so hob 10 can drive filter core 6 and produce the rotation.
The aperture size of the electromagnetic valve 12 is the same as that of the filter element 6, so that the same water flow from water inlet to the interior of the filter element 6 is ensured, the control of the electromagnetic valve 12 is completely realized by the controller 5, when the filtering work is carried out, the electromagnetic valve 12 on the upper sealing disc 8 is opened, the electromagnetic valve 12 on the lower sealing disc 9 is closed, when the backwashing is required, the electromagnetic valve 12 at the top of the filter element 6 which needs backwashing is closed, and the electromagnetic valve 12 at the bottom of the filter element which needs backwashing is opened, so that the backwashing is carried out.
The water outlet 3 is closed firstly during backwashing, the tank body 1 is filled with water until the water overflows the top of the water overflowing pipe 13 and is discharged from the water outlet 3, namely the filter element 6 is completely immersed in the water, the backwashing process can be carried out, the filter element 6 is backwashed one by controlling the switch of the electromagnetic valve 12, because the rotation of the filter element 6 drives the streaming of the water, a radial impact force is also exerted on the filter element 6, the backwashing is more facilitated, the distance from the top of the water overflowing pipe 13 to the top of the filter element 6 is set according to the specific size of the filter and the condition of filtering seawater, the part above the top of the water overflowing pipe 13 can ensure that the filter element 6 is immersed in the water all the time during backwashing, and the water outside the filter element 6 cannot fall below the top of the.
Wherein, the water inlet 2 of seting up in the tangential of jar body 1 top makes the sea water that gets into the intake antrum be the spiral and rotate, can have a revolving force to the sea water that gets into like this, still has the spiral power in the filter core 6 that enters into in the present period, more does benefit to the rotation that drives filter core 6.
The working principle of the embodiment is as follows:
the filtration principle is as follows:
before use, the whole device is checked to be free of problems, and all the devices can be operated and used normally; the filtering process is carried out, all the electromagnetic valves 12 arranged on the upper sealing disc 8 are in a normally open state, all the electromagnetic valves 12 arranged on the lower sealing disc 9 are in a normally closed state, the water inlet 2 is connected, the pretreated seawater enters through the water inlet 2 and spirally rotates in the water inlet cavity, the seawater flows downwards into the filter element 6 due to the opening of the electromagnetic valves 12, the seawater can meet the spiral rod 10 when entering the top of the filter element 6, the spiral rod 10 is provided with spiral slurry, the seawater impacts the paddle to drive the spiral rod 10 to rotate, the spiral rod 10 drives the filter element 6 connected with the spiral rod to rotate (two ends of the filter element 6 are connected with the sealing discs through the bearings 11 and can rotate), the seawater enters into the filter element 6 and is filtered by the filter layer 602, filter residues can be left on the inner side of the filter element 6, the filtered water can directly flow to the bottom of the tank body 1 and then is discharged from the water outlet 3, the filtration is completed.
The back washing principle is as follows:
when the pressure difference between the inside and the outside of the filter element 6 reaches a certain value (which indicates that the filter element is blocked seriously and the filter element 6 needs to be washed), the water outlet 3 is closed first, the tank body 1 is filled with water, in the process of flushing, the filter element 6 rotates under the driving of the rotation of the filter element 6, when the tank body 1 is filled with water and the water overflows from the overflow pipe 13, the filter element 6 is completely immersed in the water, the back washing of the filter element can be started, the electromagnetic valve 12 corresponding to the top of the filter element 6 to be washed is closed, the electromagnetic valve 12 corresponding to the bottom of the filter element is opened, the water outside the filter element 6 reversely passes through the filter element 6 under the action of water pressure, filter residues accumulated in the filter element are washed away, meanwhile, the filter element 6 drives the rotation of the water, the rotating water also gives an impact force to the filter element 6, and the impact force is matched with, cleaning the filter element 6 in a short time, after the filter element 6 is cleaned, returning the corresponding upper and lower electromagnetic valves 12 to the original state, then starting to clean the next filter element 6, repeating the previous operations until all the filter elements are cleaned, opening the water outlet 3, finishing the backwashing process, and then performing the filtering process.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a full-automatic back flush precision filter, includes jar body (1), jar body (1) is inside including the water inlet cavity that is located the top and the play water cavity of bottom, its characterized in that: the utility model discloses a water inlet (2) is seted up at the top of jar body (1) one side, delivery port (3) have been seted up to the bottom of jar body (1) one side, drain (4) have been seted up to the bottom of the jar body (1), the opposite side fixed mounting of the jar body (1) has controller (5), the inside top fixed mounting of the jar body (1) has last sealing plate (8), the inside bottom fixed mounting of the jar body (1) has lower sealing plate (9), the water pipe (13) of overflowing have been seted up to the inside one side of the jar body (1), the top of going up sealing plate (8) with the bottom fixed mounting of lower sealing plate (9) has solenoid valve (12), go up sealing plate (8) with swing joint has filter core (6) between lower sealing plate (9).
2. The full-automatic backwashing precision filter of claim 1, wherein: go up closing disc (8) with closing disc (9) passes through bearing (11) swing joint filter core (6) down, the outer lane of bearing (11) adopts the interference fit joint to install at last closing disc (8) and closing disc (9) down, inner circle fixed connection filter core (6) of bearing (11).
3. The full-automatic backwashing precision filter of claim 1, wherein: the bottom of the filter element (6) is fixedly provided with a screw rod (10), and the bottom end of the screw rod (10) is fixedly arranged on a lower end cover (605) of the filter element (6).
4. The full-automatic backwashing precision filter of claim 1, wherein: the water inlet (2) and the water inlet cavity of the tank body (1) are tangentially arranged.
5. The full-automatic backwashing precision filter of claim 1, wherein: the top level of the water overflowing pipe (13) is higher than the top end of the filter element (6) by a certain distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256487.9A CN110975379B (en) | 2019-12-10 | 2019-12-10 | Full-automatic back-washing precision filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911256487.9A CN110975379B (en) | 2019-12-10 | 2019-12-10 | Full-automatic back-washing precision filter |
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| Publication Number | Publication Date |
|---|---|
| CN110975379A true CN110975379A (en) | 2020-04-10 |
| CN110975379B CN110975379B (en) | 2021-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911256487.9A Active CN110975379B (en) | 2019-12-10 | 2019-12-10 | Full-automatic back-washing precision filter |
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| CN110538505A (en) * | 2019-09-11 | 2019-12-06 | 中国农业科学院农田灌溉研究所 | Self-rotating filter screen micro-irrigation filter and installation method thereof |
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| CN2808268Y (en) * | 2005-08-11 | 2006-08-23 | 北京科净源环宇科技发展有限公司 | Fluid filter |
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| CN110975379B (en) | 2021-08-24 |
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