CN102580387A - Self-cleaning filter capable of realizing double-sided backwashing - Google Patents
Self-cleaning filter capable of realizing double-sided backwashing Download PDFInfo
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- CN102580387A CN102580387A CN2012100597583A CN201210059758A CN102580387A CN 102580387 A CN102580387 A CN 102580387A CN 2012100597583 A CN2012100597583 A CN 2012100597583A CN 201210059758 A CN201210059758 A CN 201210059758A CN 102580387 A CN102580387 A CN 102580387A
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- 238000004140 cleaning Methods 0.000 title claims abstract description 26
- 238000011001 backwashing Methods 0.000 title abstract 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 38
- 238000005406 washing Methods 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 32
- 238000013519 translation Methods 0.000 claims abstract description 8
- 230000005540 biological transmission Effects 0.000 claims description 13
- 230000000694 effects Effects 0.000 claims description 10
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 238000000746 purification Methods 0.000 abstract description 4
- 239000012535 impurity Substances 0.000 description 18
- 238000010521 absorption reaction Methods 0.000 description 7
- 230000014616 translation Effects 0.000 description 6
- 230000009467 reduction Effects 0.000 description 5
- 239000000853 adhesive Substances 0.000 description 4
- 230000001070 adhesive effect Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002689 soil Substances 0.000 description 4
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000002950 deficient Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
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- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000001939 inductive effect Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
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- 230000007246 mechanism Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
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Abstract
The invention relates to a self-cleaning filter capable of realizing double-sided backwashing, comprising a filtering part, a backwashing driving part for driving a dirt suction device assembly to rotate and a high-pressure washing device; the high-pressure washing device comprises a high-pressure washing pump and a high-pressure branch pipe which is arranged on the external wall of a fine filter screen of the filter and is synchronously operated with the dirt suction device assembly; the high-pressure branch pipe is provided with a plurality of nozzles at intervals over against the external wall of the fine filter screen; each nozzle corresponds to each suction nozzle arranged on a dirt suction pipe of the dirt suction device assembly, and the nozzles are oppositely arranged on the internal wall and the external wall of the fine filter screen; water discharged by the high-pressure washing pump is sprayed to the external wall of the fine filter screen via the high-pressure branch pipe and the nozzles and used for washing away or loosening dirt on the internal surface and the external surface of the fine filter screen, so that the dirt can be effectively sucked up by the suction nozzles; in combination with the rotation and translation of a dirt suction device, the internal surface and the external surface of the whole fine filter screen can be completely cleaned; and the self-cleaning filter is more suitable for online purification of a low-pressure circulating water system.
Description
Technical field
The present invention relates to a kind of industrial circulating water carried out the filter of purified treatment, relate in particular to a kind of self-cleaning strainer that can remove dirt and impurity on the screen pack automatically.
Background technology
Industrial circulating water is carried out the basic functional principle of the filter of in-line purification processing; Can invent and the utility model patent specification referring to the multinomial China that the applicant applies for before this; Its basic structure can combine of the present invention shown in Figure 1, and former water is from water inlet 101 input coarse filtration chambeies 103, through coarse strainer 102 with former water in the bigger impurity interception of particle; Get into fine filtering chamber 104 again, water purification is discharged from delivery port 106 after fie screen 105 further filters.After the regular hour filtration, the inwall of fie screen 105 tends to gather one deck impurity, at pressure reduction that progressively increases of fie screen 105 inside and outside generations; When this pressure reduction is excessive, will have influence on the normal rate of filtration, for this reason, central authorities are provided with dirt sucking device assembly 201 vertically in the cylindricality fine filtering cavity that fie screen 105 surrounds; Be arranged at intervals with a plurality of suction nozzles 202 on this dirt sucking device assembly 201, the connecting rod 303 on the reductor 301 drive speed reducer drive lead screws 302 in the backwash drive division 3, this dirt sucking device assembly 201 is fixedly connected with connecting rod 303; When anti-cleaning was blowdown, electromagnetism blowoff valve 114 was opened automatically, and this dirt sucking device assembly 201 is under the driving of reductor 301; Through the connecting rod on the screw mandrel 302 303; Dirt sucking device assembly 201 along fie screen or dirt sucking device assembly axially do move (translation and rotate) on the spiral, suction nozzle 202 and 201 synchronous operations of dirt sucking device assembly, electromagnetism blowoff valve 114 is opened; Cause the hurried decline of pressure in blowdown chamber 108; Blowdown chamber 108 is communicated with fine filtering chamber 104 through soil pick-up assembly 201, suction nozzle 202, like this, and the synchronous hurried decline of pressure in 108 relative fine filtering chambeies 104, blowdown chamber; Thereby between blowdown chamber 108 and fine filtering chamber 104, produce pressure reduction, realize comprehensive absorption and cleaning through suction nozzle 202 thus attached to the impurity of fie screen 104 inner wall surface.In this backwash process, current can continue to flow, thereby can realize the operation of continuous and automation.
The major defect of above-mentioned back purge system is: when filter service time is longer; Be attached with impurity, dirt and the viscosity deposit that can not be siphoned away by the suction nozzle 202 on dirt sucking device 201 assemblies on the fie screen unavoidably, if the suction of suction nozzle 202 is not enough, these impurity accumulate over a long period; Possibly have influence on the automated cleaning effect and the service life of self-cleaning strainer; Especially in the former water system of low-pressure, blowdown chamber 108 is less with the pressure reduction in fine filtering chamber 104, and the suction of suction nozzle 202 is not enough to remove aforementioned various impurity; Cause the backwash effect of filter not good enough, the long-term back strainability that uses reduces.
For this reason; On October 24th, 2008 application, on April 8th, 2009, disclosed application number was the flusher that 200810217079.8 Chinese invention patent ublic specification of application just discloses a kind of electric control self-cleaning strainer; In the dirt sucking device assembly of above-mentioned filter, be provided with in addition the device of water flow jet to the fie screen inwall; Through said suction nozzle 202 to fie screen inwall inject high pressure current; Aforementioned various impurity to attached to the fie screen inwall wash away in advance, and the means of row absorption are carried out the backwash of filter again, to improve backwash effect.
Yet, even add these backwash equipment, at first; Because the adhesive force direction of the aforementioned various impurity of fie screen inwall is from inside to outside generally; With aforementioned High-Pressure Water to wash away direction consistent, therefore, still have the impurity of part attached to the fie screen inwall; Especially the impurity that adhesive force is stronger is difficult in this kind high pressure flush, thoroughly loosening and by suction nozzle 202 absorption, remove; Secondly, the fie screen outer wall in the filter is in the blind area always in backwash process, and the various attachments that are positioned at attached to the fie screen outer wall do not obtain removing all the time, and long-term the use equally also can influence the filter efficiency of filter; The 3rd, in the former water system of low-pressure, the defective that this kind filter backwash effect is not good enough is not still by effective solution.
Summary of the invention
To the defective of above-mentioned prior art, the present invention aims to provide a kind of self-cleaning strainer that can two-sided backwash, with impurity, the attachment of the fie screen inside and outside wall in effective removing filter, improves filter efficiency.
The present invention solves the problems of the technologies described above the technical scheme that is adopted, and a kind of self-cleaning strainer that can two-sided backwash comprises filter house, dirt sucking device assembly, backwash drive division,
Said filter house comprises water inlet, coarse strainer, coarse filtration chamber, fine filtering chamber, fie screen and delivery port, and former water is introduced from water inlet, to the coarse filtration chamber, gets into the fine filtering chamber through coarse strainer again from the coarse filtration chamber, behind the fie screen secondary filter, draws from delivery port;
Said dirt sucking device assembly places said fie screen central, and communicates with the blowdown chamber through dirt sucking tube, is installed with a plurality of suction nozzles that are used to adsorb the attachment on the fie screen inwall on the said dirt sucking tube at interval;
Said backwash drive division drives said dirt sucking device assembly with the mode of rotating, and said suction nozzle is turned round along the fie screen inner wall surrounding;
Also comprise the high pressure washing device; Said high pressure washing device comprise the high pressure washing pump with; The said fie screen outer wall at least one edge be provided with and with the high pressure arm of said dirt sucking device assembly synchronous operation; Said high pressure arm is arranged at intervals with a plurality of nozzles over against said fie screen outer wall, and the water outlet of said high pressure washing pump is sprayed to said fie screen outer wall through high pressure arm, a plurality of nozzle successively.
The corresponding inside and outside wall that also is arranged on said fie screen in opposite directions of said each suction nozzle with said each nozzle.
Said backwash drive division guides said dirt sucking device assembly in fie screen through a helical screw, and translation is vertically also rotated.
Said high pressure washing device further comprises the high pressure skirt that is contained in the said dirt sucking tube, the high pressure guiding tube that tightly is enclosed within first port of high pressure skirt and can slides relatively with said high pressure skirt; The cover that is in transmission connection with distributing T-pipe effect is installed on the dirt sucking device assembly; The port that overlaps that is in transmission connection communicates with second port of said high pressure skirt; Two other port communicates with two high pressure arms that are set up in parallel respectively, and the water outlet that is arranged on the outside said high pressure washing pump of filter is introduced said high pressure arm through high pressure guiding tube, high pressure skirt, the cover that is in transmission connection successively.
With respect to prior art; Embodiment of the present invention can two-sided backwash self-cleaning strainer, have following beneficial effect: after adopting the technical scheme of the invention described above, clean water sprays the formation high-speed jet fast from a plurality of nozzles; Water (flow) direction when the direction of this high-speed jet and normal filtration is opposite; Wash away the outer surface of fie screen through high-speed jet, can the impurity, dirt and the attachment that be difficult on the fie screen inner surface siphoned away by the suction nozzle of dirt sucking device assembly be washed away or loosening, wash away the attachment that gets off so that suction nozzle can effectively siphon away these; In addition; High-speed jet is washed away after the outer surface of fie screen, rinses the long-time attachment that forms of the outer surface of fie screen well, thereby reach the surfaces externally and internally of whole fie screen is cleaned fully; Simultaneously, in conjunction with rotatablely moving and horizontal movement of dirt sucking device, the outer high-pressure injection of fie screen combines with the interior soil pick-up of fie screen, makes that the surfaces externally and internally of whole fie screen is cleaned fully.
Description of drawings
Fig. 1 is the cross-sectional view of self-cleaning strainer according to the invention;
Fig. 2 is dirt sucking device assembly and the structural representation of high pressure washing device in the self-cleaning strainer according to the invention;
Fig. 3 is the external structure sketch map of self-cleaning strainer according to the invention.
Among the figure, 101 water inlets, 102 coarse strainers, 103 coarse filtration chambeies, 104 fine filtering chambeies, 105 fie screens, 106 delivery ports, 108 blowdown chambeies; 111 coarse filtration chambeies and fine filtering chamber dividing plate, 112 rough and careless chambeies and blowdown chamber dividing plate, 114 blowoff valves, 115 blow-off pipes, 116 filter bottoms; 117 filter housings, 118 filter end cover plates, 119 Pressure gauges and control cabinet, 120 pressure reduction inductive switches, 200 dirt sucking tubes; 201 dirt sucking device assemblies, 202 suction nozzles, the sewage draining exit of 205 dirt sucking devices, 301 reductors, 302 screw mandrels; 303 connecting rods, 501 high pressure washing pumps, 502 high-pressure hoses, 503 high-pressure pipe connectors, 504 high pressure guiding tubes; 505 high pressure skirts, 506 covers that are in transmission connection, 507 high pressure arms, 508 nozzles, 509 connecting pins.
The specific embodiment
Please with reference to Fig. 1, Fig. 2 and Fig. 3; The same prior art of basic structure of self-cleaning strainer that can two-sided backwash according to the invention mainly comprises filter house, dirt sucking device assembly, backwash drive division, and said filter house comprises water inlet 101, coarse strainer 102, coarse filtration chamber 103, fine filtering chamber 104, fie screen 105 and delivery port 106; Former water is introduced from water inlet; To the coarse filtration chamber, get into the fine filtering chamber through coarse strainer again from the coarse filtration chamber, behind the fie screen secondary filter, draw from delivery port; The concrete structure of this filter is referring to Fig. 1 and Fig. 3, and 111 is the dividing plate between coarse filtration chamber and the fine filtering chamber, the dividing plate between 112 rough and careless chambeies and the blowdown chamber, and these architectural features identical with prior art repeat no more at this.
Said dirt sucking device assembly 201 places fie screen 105 central authorities, and communicates with blowdown chamber 108 through dirt sucking tube 200, is installed with a plurality of suction nozzles 202 that are used to adsorb the attachment on fie screen 105 inwalls on the dirt sucking tube 200 of said dirt sucking device assembly at interval; Common structure be as Fig. 1, shown in Figure 2 on the right and left rightabout on the dirt sucking tube 200 evenly the compartment of terrain set firmly suction nozzle 202.
In order to improve anti-effect of cleaning; The quantity of the spacing of adjacent suction nozzle 202 and suction nozzle 202 can and combine its rotating speed and the height of fie screen itself is confirmed jointly according to stroke, the pitch of screw mandrel 302; With guarantee suction nozzle 202 translations, when rotating, with the impurity of the mode pointwise absorption fie screen inwall of scanning, the scope of its scanning can cover each zone on the fie screen inwall as far as possible and not stay blind spot; This is not difficult for a person skilled in the art to accomplish, need not gives unnecessary details.
Said backwash drive division 3 drives said dirt sucking device assembly with the mode of rotating, and said suction nozzle is turned round along the fie screen inner wall surrounding; Specifically, can adopt reductor shown in Figure 1 301, drive helical screw 302 helical rotation by it, 303 of connecting rods that is fixedly connected with screw mandrel 302 are fixedly connected with dirt sucking device assembly 201.Like this; To fie screen 105 anti-cleanings the time, because fie screen 105 itself is motionless; Suction nozzle 202 and the high pressure washing device 5 of next setting forth all are fixedly connected with dirt sucking device assembly 201; Under the drive of reductor 301, dirt sucking device assembly 201 rotates and translation vertically, and the suction nozzle 202 of synchronous operation and nozzle 508 can be realized omnibearing flushing, absorption are carried out in the inside and outside wall pointwise of fie screen 105 step by step.
The present invention is on the said structure basis; Also further be provided with a cover high pressure washing device 5; High pressure washing device 5 comprises the high pressure washing pump 501 that independently is arranged on the filter outside, and high pressure washing pump 501 joins with high pressure guiding tube 504 through high-pressure hose 502, high-pressure pipe connector 503, segregate high pressure skirt 505 in the dirt sucking tube 200 of this dirt sucking device assembly 201 of other end insertion; This high pressure guiding tube tightly is enclosed within first port of high pressure skirt and can slides relatively with high pressure skirt 505; The cover 506 that is in transmission connection with distributing T-pipe effect is installed on the dirt sucking device assembly 201, and is as depicted in figs. 1 and 2, and the cover 506 that is in transmission connection is fixed on the junction of connecting rod 303 and dirt sucking device assembly 201; With the interlock of realization with dirt sucking device assembly 201; This cover port of 506 that is in transmission connection communicates with second port of high pressure skirt 505, and two other port communicates with two high pressure arms 507 that are set up in parallel respectively and is fixedly connected, thus drive high pressure arm 507 also with 201 synchronous operations of dirt sucking device assembly; High pressure arm 507 is along the outer wall setting of fie screen 105, and high pressure arm 507 also is arranged at intervals with a plurality of nozzles 508 over against the fie screen outer wall.
Interior also can the slip relatively with high pressure skirt 505 of first port that aforementioned high pressure guiding tube tightly is enclosed within the high pressure skirt be meant: the high pressure guiding tube is vertical displacement vertically and maintenance liquid sealing in this high pressure skirt 204; Can guarantee at the dirt sucking device assembly parallelly when mobile like this, also can make high pressure washing device 5 carry out the flushing action.
The flushing operation principle and the process of the high pressure back side back purge system of aforementioned self-cleaning strainer are such: at first start this high pressure washing pump 501, this high pressure washing pump 501 can inject the high pressure skirt 505 that is positioned at dirt sucking tube 200 through high-pressure hose 502, high-pressure pipe connector 503, high pressure guiding tube 504 with clean water.Water in the dirt sucking tube 200 is actually isolated with clean waters in the high pressure skirt 505, and then, the clean water High-Pressure Water is in transmission connection from dirt sucking device and overlaps 506 and be diverted to two high pressure arms 507 that are set up in parallel; And, forming high-speed jet from 508 ejections of more than 507 nozzle of high pressure arm, the outer surface of fie screen 105 is washed away in this high-speed jet; And the mesh that sees through fie screen impurity that the inwall of fie screen is difficult to be siphoned away by the suction nozzle 202 of dirt sucking device 201 and dirt etc. dash from fie screen; Liquidated by suction nozzle 202 and suck from the pollution of fie screen, the sewage draining exit 205 on the soil pick-up assembly is to blowdown chamber 108; Discharge by blow-off pipe 115; In addition, high-speed jet is washed away after the outer surface of fie screen, also rinses the long-term attachment that forms of the outer surface of fie screen in the lump well; Thereby reach the surfaces externally and internally of whole fie screen is cleaned fully, promptly two-sided cleaning.
What need particularly point out is, aforementioned structure, the especially structure of high pressure washing device 5 are merely a kind of concrete embodiment of the present invention, and its advantage is to make structure of the present invention more compact, rationally, move more reliable, guarantee not move interference.And for a person skilled in the art, be understood that: as long as high pressure arm 507 is arranged on the outer surface of fie screen 105, this high pressure arm 507 can with the synchronous operation of dirt sucking device assembly; Promptly be fixedly connected and do not relatively move, and do not move interference with miscellaneous part, this high pressure arm 507 can receive clean water that high pressure washing pump 501 introduces the outer wall of fie screen is washed away simultaneously; Just be enough to be different from prior art; And can realize basic purpose of the present invention and basic function fully, and the mechanical mechanism of these functions can have the mode of a variety of realizations, as depicted in figs. 1 and 2 such as the shape of high pressure arm 507; Structure with " L " of single face or two-sided " U " font; The center of one end of " L " or " U " font is fixed on the connecting rod 303 to keep the synchronous operation with the dirt sucking device assembly, receives the diversion of high pressure washing pump 501 simultaneously directly or indirectly, and the other end is as the water side of nozzle; Be mounted to structure of the present invention, wash fie screen from the outside.
Such as, among Fig. 1 and Fig. 2, high pressure arm 507 has two; Be " U " font and distribute, therefore used the cover 506 that is in transmission connection to carry out distributing T-pipe, in fact; Be merely one like high pressure arm 507; Or be more than two, the cover 506 that is in transmission connection can be common pipe joint or be four-way union or the like, can do corresponding variation according to actual needs and still can realize above-mentioned functions and purpose basically.
Be that high pressure arm 507 is fixedly connected in the outer wall setting of fie screen 105 and with dirt sucking device assembly 201; Thereby realize interlock; High pressure arm 507 is arranged at intervals with a plurality of nozzles over against fie screen 105 outer walls, and the water outlet of said high pressure washing pump is sprayed to said fie screen outer wall through high pressure arm, a plurality of nozzle successively.
In addition; Among the present invention, be fixedly connected with dirt sucking device assembly 201, realize dirt sucking device assembly 201 translation vertically when rotating with the connecting rod 303 of screw mandrel 302 interlocks; And in fact; As long as dirt sucking device assembly 201 can rotate, translation then is not to be necessary, can realize perfect relatively scanning absorption through the number change (increasing) of suction nozzle fully.
In the specific embodiment of the present invention, generally, be arranged on the inside and outside wall of fie screen correspondingly always with suction nozzle 202 and nozzle 508; As shown in Figure 2, be provided with side by side and in opposite directions, middle across fie screen; The purpose of design is like this: after in a single day nozzle 508 washes away; Be positioned at the fie screen inwall, come off or attachments such as loosening impurity, dirt nearest apart from suction nozzle 202, be easy to adsorb fully in time by suction nozzle 202, thus the raising backwash effect.Be understood that; In the present invention; As long as be provided with the nozzle 508 that is positioned at the fie screen outer wall; Just can realize goal of the invention basically: the water outlet of high pressure washing pump is sprayed to said fie screen outer wall through high pressure arm, a plurality of nozzle successively, as for this nozzle 508 and suction nozzle 202 relative position more specifically, as both over against, correspondence etc. is the technical characterictic of second level one by one.
The backwash operation principle of self-cleaning strainer of the present invention and process can also be understood like this: this high pressure washing pump 501 can provide one powerful high-pressure spray to fie screen 105 outer surfaces by nozzle 508; Both can strengthen the absorption affinity of suction nozzle; Can also effectively wash away the stronger impurity of adhesive force; Reason just is that the adhesive force direction of high-pressure spray and impurity is opposite, thereby the inside and outside two sides of fie screen is cleaned completely.Even if the dirt of the high adhesion force of fie screen 105 inner surfaces or interceptor dash through High-Pressure Water from or loosening after; Also can in time be siphoned away, under powerful jet impulse, also can break away from fie screen as for any viscosity deposit of fie screen outer surface by the suction of suction nozzle 202.Simultaneously, in conjunction with rotatablely moving and horizontal movement of dirt sucking device assembly 201, injection combines with soil pick-up; Make that the surfaces externally and internally of whole fie screen is cleaned fully, and the effect of washing away does not generally receive the pressure influence of circulation self yet; Therefore; Even in the recirculated water in-line purification process of low system pressure (below the 2Kgf), through using for a long time, the backwash of filter, the unsettled limitation of filth-discharging effect also can effectively overcome.
Claims (4)
- One kind can two-sided backwash self-cleaning strainer, comprise filter house, dirt sucking device assembly, backwash drive division,Said filter house comprises water inlet, coarse strainer, coarse filtration chamber, fine filtering chamber, fie screen and delivery port, and former water is introduced from water inlet, to the coarse filtration chamber, gets into the fine filtering chamber through coarse strainer again from the coarse filtration chamber, behind the fie screen secondary filter, draws from delivery port;Said dirt sucking device assembly places said fie screen central, and communicates with the blowdown chamber through dirt sucking tube, is installed with a plurality of suction nozzles that are used to adsorb the attachment on the fie screen inwall on the said dirt sucking tube at interval;Said backwash drive division drives said dirt sucking device assembly with the mode of rotating, and said suction nozzle is turned round along the fie screen inner wall surrounding; It is characterized in that:Also comprise the high pressure washing device; Said high pressure washing device comprise the high pressure washing pump with; The said fie screen outer wall at least one edge be provided with and with the high pressure arm of said dirt sucking device assembly synchronous operation; Said high pressure arm is arranged at intervals with a plurality of nozzles over against said fie screen outer wall, and the water outlet of said high pressure washing pump is sprayed to said fie screen outer wall through high pressure arm, a plurality of nozzle successively.
- 2. self-cleaning strainer that can two-sided backwash as claimed in claim 1 is characterized in that: said each suction nozzle is corresponding with said each nozzle and be arranged on the inside and outside wall of said fie screen in opposite directions.
- 3. arbitrary according to claim 1 or claim 2 self-cleaning strainer that can two-sided backwash, it is characterized in that: said backwash drive division guides said dirt sucking device assembly in fie screen through a helical screw, and translation is vertically also rotated.
- 4. self-cleaning strainer that can two-sided backwash as claimed in claim 3; It is characterized in that: said high pressure washing device further comprises the high pressure skirt that is contained in the said dirt sucking tube, the high pressure guiding tube that tightly is enclosed within first port of high pressure skirt and can slides relatively with said high pressure skirt; The cover that is in transmission connection with distributing T-pipe effect is installed on the dirt sucking device assembly; The port that overlaps that is in transmission connection communicates with second port of said high pressure skirt; Two other port communicates with two high pressure arms that are set up in parallel respectively, and the water outlet that is arranged on the outside said high pressure washing pump of filter is introduced said high pressure arm through high pressure guiding tube, high pressure skirt, the cover that is in transmission connection successively.
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| CN2012100597583A CN102580387A (en) | 2012-03-08 | 2012-03-08 | Self-cleaning filter capable of realizing double-sided backwashing |
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| CN2012100597583A CN102580387A (en) | 2012-03-08 | 2012-03-08 | Self-cleaning filter capable of realizing double-sided backwashing |
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Application publication date: 20120718 |