CN202490496U

CN202490496U - Self-cleaning pumping-type filter

Info

Publication number: CN202490496U
Application number: CN2012200873216U
Authority: CN
Inventors: 罗登宏; 刘文斌; 黄勇; 黄庆
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-09
Filing date: 2012-03-09
Publication date: 2012-10-17
Anticipated expiration: 2022-03-09

Abstract

The utility model provides a self-cleaning pumping-type filter. Raw water is introduced in through a water inlet of the filter, goes to a thick filter cavity through a primary strainer, and then goes to a thin filter cavity through the thick filter cavity and is introduced out through a water outlet after a secondary filter through a thin strainer. A dirt suction assembly is arranged in a center of the thin strainer in a rotating mode and is communicated with a dirt unloading cavity through a dirt suction pipe on which a plurality of T-shaped suction nozzles used for absorbing attachments on an inner wall of the thin drainer are fixed at intervals. A sand-collecting cavity arranged at a tail end of the thin filter cavity and communicated with the thin filter cavity is further included. Heights of the thick filter cavity, the thin filter cavity and the sand-collecting cavity lower one after another, and a dump pump is communicated with the dirt unloading cavity through a dump pipe. When the self-cleaning pumping-type filter is used, unclean sundries contained in the raw water and with an outer meter bigger than the suction nozzle can be collected in the sand-collecting cavity automatically and be discharged in time, and therefore guarantees that the filter still has a stable filtering function after a long-time operation. The self-cleaning pumping-type filter is especially suitable for water purification projects in the fields of agriculture, snow-mountain melt-water drop irrigation, and coal mines and the like.

Description

A kind of self-cleaning suction type filtering device

Technical field

The utility model relates to the device of water treatment precision filtration art, relate in particular to be applicable to condition of water quality harsh, water system dirty the composition granule diameter big and system pressure required lower self-cleaning strainer.

Background technology

On October 24th, 2008 application, on April 8th, 2009, disclosed application number was that 200810217079.8 Chinese invention patent ublic specification of application just discloses a kind of electric control self-cleaning strainer; It is generally as shown in Figure 1 that industrial circulating water is carried out its structure of in-line purification processing filters; Former water is from water inlet 101 input coarse filtration chambeies 102; Through coarse strainer 103 with former water in the interception of the bigger impurity of particle, get into fine filtering chamber 104 again, further filter the back water purification from delivery port 106 discharges through fie screen 105.After the regular hour filtration, the inwall of fie screen 105 tends to gather one deck impurity, inside and outside fie screen, produces a pressure reduction that progressively increases; 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 6 vertically in the cylindricality fine filtering chamber 104 that fie screen surrounds; Be arranged at intervals with a plurality of suction nozzles 61 on this dirt sucking device assembly 6, this dirt sucking device assembly 6 drives through rotary drive motor 7 and is connected the shaft joint 9 on the screw rod 8, when anti-cleaning is blowdown; Sewage draining valve 11 is opened automatically; This dirt sucking device assembly 6 is done the spiral translation to blowdown chamber 107 directions under the driving of rotary drive motor 7, cause suction nozzle 61 synchronous operations, and sewage draining valve 11 is opened; Cause the hurried decline of pressure with the blowdown chamber 107 of atmosphere; Blowdown chamber 107 is communicated with suction nozzle 61 with this soil pick-up assembly 6, thereby with respect to the synchronous hurried decline of the pressure in fine filtering chamber, thereby the comprehensive sucking that suction nozzle 61 is realized the impurity that is adsorbed on the fie screen inner wall surface; Impurity arrives blowdown chamber 107 through soil pick-up assembly 6 and is discharged by sewage draining valve 11, reaches the purpose of cleaning.In this backwash process, current can continue to flow, thereby can realize the operation of continuous and automation.

Yet; The self-cleaning strainer of above-mentioned suction mode; When suction was attached to the dirty foreign material of fie screen inwall, external diameter was difficult to be removed efficiently greater than the bore of suction nozzle and the dirty foreign material in fie screen mesh gap in the former water, and the dirty foreign material of these bulky grains tend to dirt sucking device and fie screen are formed the jam phenomenon; Reduce soil pick-up and filter effect, therefore the stability of filter normal filtration function be difficult to guarantee.

In addition; The suction that suction nozzle produced must produce according to the pressure of water system, and promptly the absorption affinity of suction nozzle depends on intrasystem hydraulic pressure and atmospheric magnitude of pressure differential, under water system hypotony operating mode; The suction that suction nozzle produces relatively is not enough; Be difficult to effectively remove adhesive force on the fie screen stronger adhere to dirty foreign material, when filter service time is longer, can form certain impurity layer gradually at the fie screen inner surface; Influence the filter efficiency of fie screen, even the mesh of fie screen can be stopped up, lost filtering function fully.

Summary of the invention

The purpose of the utility model provides a kind of self-cleaning suction type filtering device, and it is complicated to be intended to improve prior art Central Plains water condition of water quality, and the dirty foreign material of the bulky grain in the water are difficult to by the technological deficiency of effective collection or removing.

Another purpose of the utility model provides a kind of self-cleaning suction type filtering device, uses under the lower operating mode of former water system pressure, still can effectively remove the stronger dirty foreign material of adhesive force on the fie screen.

For realizing above-mentioned purpose, the self-cleaning suction type filtering device that the utility model provides comprises filter house, dirt sucking device assembly; 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 rotationally, 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; Comprise that also is positioned at the sand trap cavity that said fine filtering chamber is terminal and communicate with the fine filtering chamber, said coarse filtration chamber, fine filtering chamber, sand trap cavity height reduce gradually.Particularly, can near the bottom of an end in said coarse filtration chamber a support in order to increase be set at filter.

Also comprise suction pump, said suction pump is arranged on the filter outside, and the suction tube of suction pump communicates with said blowdown chamber.

Electric rotating machine drives said dirt sucking device assembly through driving connecting rod and rotates, and said suction nozzle is the strip suction nozzle, and communicates with said dirt sucking tube through the suction nozzle support bar, and the length sum of each suction nozzle is slightly larger than the length overall in fine filtering chamber.

Said fie screen does not have the end cap structure for the tubular two ends, and an end of fie screen communicates with coarse strainer, and the other end and sand trap cavity communicate; Said dirt sucking device assembly is arranged on the central axis of tubular fie screen.

The utility model is on the basis of original mechanism; End has increased sand trap cavity in the fine filtering chamber; And coarse filtration chamber, fine filtering chamber, sand trap cavity height are reduced gradually, be rendered as the low obliquity structure in high back before, the bigger dirty foreign material of particle in the former water; Especially external diameter greater than the dirty foreign material in the bore of suction nozzle and fie screen mesh gap in filter process; Focus on gradually in the sand trap cavity under the effect because of its deadweight and current deflecting, thereby can reduce the stick effects of these bigger dirty foreign material, the normal function of use of improvement or stable filter fie screen and suction nozzle; The suction pump of setting up separately can obviously improve the pressure reduction of suction nozzle; Strengthen the absorption affinity of suction nozzle; Further improve the cleaning performance of fie screen, thereby guarantee filter after long-time running, soil pick-up, pollution discharge capability are still very reliable; Promptly have stable filtering function, be suitable for especially that the irrigation canals and ditches water droplet that agriculture irrigation system, snow mountain snow melt form is irritated, the link such as dustproof of colliery water.

Description of drawings

Fig. 1 is a kind of internal structure sketch map of common circulating water strainer;

Fig. 2 is the described a kind of self-cleaning suction type filtering device structural representation of the utility model;

Fig. 3 is self-cleaning suction type filtering device outer structural element figure shown in Figure 2;

Fig. 4 is the filter structure signal of self-cleaning suction type filtering device shown in Figure 2;

Fig. 5 is self-cleaning suction type filtering device dirt sucking device assembly structure signal shown in Figure 2.

The specific embodiment

For the purpose, technical scheme and the advantage that make the utility model is clearer,, the utility model is further elaborated below in conjunction with accompanying drawing and embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.

In conjunction with reference to Fig. 2, Fig. 3, Fig. 4, Fig. 5, a kind of self-cleaning suction type filtering device that the utility model preferred embodiment provides comprises filter house, dirt sucking device assembly; 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; Arrive the coarse filtration chamber through coarse strainer; Get into the fine filtering chamber again from the coarse filtration chamber, behind the fie screen secondary filter, draw from delivery port, these all are common structure or work principle of filter; This dirt sucking device assembly 6 places said fie screen central according to common mode rotationally; The dirt sucking tube 62 of dirt sucking device assembly 6 communicates through end-of-the-pipe 64 with blowdown chamber 107, and dirt sucking tube 62 is realized isolating through self tube wall and the indoor water of filter chamber, is installed with a plurality of suction nozzles 63 that are used to adsorb the attachment on fie screen 105 inwalls on the dirt sucking tube 62 at interval; Gap between suction nozzle and the fie screen inwall generally is controlled at below the 2mm; So that when the dirty foreign material of backwash fie screen inwall, successfully dirty foreign material are siphoned away from the fie screen inwall, arrive the blowdown chamber through dirt sucking tube 62, end-of-the-pipe 64; Discharge by suction pump 211 again, realize anti-cleaning fie screen.

One of main distinction of the utility model and prior art is also to comprise that is positioned at the sand trap cavity 108 that said fine filtering chamber 104 is terminal and communicate with the fine filtering chamber, and said coarse filtration chamber, fine filtering chamber, sand trap cavity height reduce gradually, and the simplest way is as shown in Figures 2 and 3 in the practice; In the bottom of filter, near the end in coarse filtration chamber a support 5 is set, promptly from external support, increase filter this end near the coarse filtration chamber; The height of coarse filtration chamber, fine filtering chamber, sand trap cavity is reduced gradually; The structure of the remaining part of filter is constant substantially, forms certain inclination angle like this between the axis of coarse filtration chamber, fine filtering chamber, sand trap cavity and the horizontal plane, so that particle greatly in the former water, be difficult to the dirty foreign material that are filtered and adsorb; Among filter process; With current gradually, sedimentation automatically, gather in the sand trap cavity 108, certainly, the usual manner that is equal to other functions or effect; Coarse filtration chamber, fine filtering chamber, sand trap cavity are reduced successively gradually; And form certain inclination angle between the horizontal plane, be convenient to assemble, the big heavier dirty foreign material of automatic sedimentation, also be fine.

The main effect that above-mentioned sand trap cavity 108 is set is the bigger dirty foreign material of particle in the former water; Especially external diameter greater than the dirty foreign material in suction nozzle and fie screen mesh gap in filter process; Focus in the sand trap cavity gradually under the effect because of its deadweight and current deflecting; Thereby can reduce the stick effects of these bigger dirty foreign material, the normal function of use of improvement or stable filter to fie screen and suction nozzle.

Sediment ejection opening at above-mentioned sand trap cavity 108 is provided with sand excluding valve door 109, and purpose is to treat that the bigger dirty foreign material of particle in the sand trap cavity assemble more for a long time, through opening sand excluding valve door 109, with its direct discharge, guarantees the stability of dirt eliminating function and filtering function.

For adapting to the filtration of the former water of low-pressure, increase the absorption affinity of suction nozzle when anti-cleaning the on the dirt sucking device assembly, the utility model also is provided with a suction pump 211; This suction pump is arranged on the outside of filter housings 203, and the suction tube 209 of suction pump communicates with blowdown chamber 107, like this when cleaning the fie screen inwall is counter; Can strengthen the absorption affinity of the suction nozzle that communicates with it, because in the prior art by the negative pressure of suction pump generation; The absorption affinity of suction nozzle mainly relies on the difference of former water pressure and atmospheric pressure to produce absorption affinity; And for the former water of low pressure, the absorption affinity of suction nozzle often is difficult to meet the demands, after long-term the use; Filtering function can significantly reduce, and the operation stability of filter is not enough.The suction pump that the utility model increases can remedy this defective well; In the practice, can be according to actual needs, the fie screen inside and outside differential pressure that arrives like timely monitor; Threshold pressure differential is set; Comprise frequency that the phenomenon that surpasses threshold pressure differential produces or the like factor, manually or automatically regulate the power of suction pump, and then the size of regulating swabbing pressure.

Said dirt sucking device assembly 6, is rotated such as drive this dirt sucking device assembly 6 with driving connecting rod 71, because the utility model has been set up aforementioned suction pump through usual manner by electric rotating machine 7; Improved the inside and outside differential pressure of suction nozzle part; So suction nozzle 63 can be set to the suction nozzle of strip, and is as shown in Figure 5, the suction nozzle of the sharp-mouth type of the prior art of comparing; The zone of strip suction nozzle 63 suctions of the utility model obviously increases a lot; And because the still old enough absorption affinities of existence of suction pump satisfy the needs that adsorb, adsorption efficiency is higher.

Aforementioned suction nozzle communicates with dirt sucking tube 62 through suction nozzle support bar 65, and is as shown in Figure 5, and suction nozzle support bar and suction nozzle are " T " font structure; Each suction nozzle 63 can be as shown in Figure 5; From four different directions at interval, dislocation, arrange each suction nozzle equably, the length sum of each suction nozzle 63 is slightly larger than the length overall in fine filtering chamber 104, because be in operation; The dirt sucking device assembly rotates; Each " T " font suction nozzle can be responsible for the cylindricality zone of the fie screen suitable with suction nozzle length, when a plurality of " T " font suction nozzle is spaced apart, as long as avoid the blind area according to usual manner; Be that the projection of adjacent suction nozzle on the fie screen central axis do not separate, is interrupted phenomenon; So all suction nozzles just can cover whole inwalls that fie screen has mesh after dirt sucking device assembly 6 rotates weeks, the realization non-blind area, to the anti-cleaning of fie screen.

Because the suction nozzle replacing rectangularity, form " T " word structure with the suction nozzle support bar, driving connecting rod 71 can no longer be that prior art is described: the structure that must be helical screw; I.e. rotation on one side Yi Bian make axial translation, drives dirt sucking device assembly and suction nozzle and aspirates dirty foreign material along the scan mode that the fie screen inwall is wire; And in the utility model, the transmission agency that driving connecting rod 71 only need be accomplished rotation gets final product, and a plurality of " T " font suction nozzle is enough to after the dirt sucking device assembly rotates a week; Just can cover whole inwalls that fie screen has mesh; The dirt sucking device assembly need not to do axial translation again, requires filter that liquid sealing performance is preferably arranged because of the axial translation of dirt sucking device assembly, in the utility model, has not also needed; Like this; The general structure of filter will be more succinct, compact, move also more reliably, stable, keep in repair also more convenient.

Owing in the utility model, use the mode of rotating to drive the dirt sucking device assembly 6 anti-fie screens that clean, therefore; The tubular structure that fie screen 105 is preferably as shown in Figure 4, dirt sucking device assembly 6 is arranged on the central axis of tubular fie screen 105, as long as when other structures can guarantee that suction nozzle rotates the dirty foreign material of absorption fie screen inwall certainly; The spacing of suction nozzle and fie screen inwall can be smaller, all is not fine but do not move interference, in the utility model; Fie screen is that two ends do not have the end cap structure; One end of fie screen communicates with coarse strainer, and the convenience for making or installing generally can connect into coarse strainer and fie screen integral body and become tubular structure; Through screen support cover 302 and dividing plate 303 supports of thickness filter chamber chamber and isolation, but this is not to say that the structure of coarse strainer or fie screen can only be a tubular structure.

One end of fie screen communicates with coarse strainer, directly goes through fie screen through the preliminary water that filters of coarse strainer again and filters; The other end of fie screen and sand trap cavity 108 communicate; In the specific embodiment of the utility model, sand trap cavity 108 is arranged on the end of fie screen, and is as shown in Figure 2; Between fine filtering chamber and blowdown chamber; Dirt sucking tube still passes through blowdown chamber from sand trap cavity, promptly on the prior art basis, fine filtering chamber end is reserved a block space separately as the independent sand trap cavity that is provided with, and with dividing plate 304 supports of thickness filter chamber chamber and isolation shown in Figure 2; What need supplementary notes is: in the specific embodiment shown in Figure 2; Blowdown chamber and coarse filtration chamber lay respectively at the two ends of fie screen, and therefore, sand trap cavity 108 is between fine filtering chamber and blowdown chamber; But in the practice; If when blowdown chamber and coarse filtration chamber are positioned at the same end of fie screen (generally need pass the dirt sucking device assembly this moment from the coarse filtration chamber, introduce the fine filtering chamber again), sand trap cavity 108 is not between fine filtering chamber and blowdown chamber; And should be relative with the coarse filtration chamber, both are separately positioned on different end, fine filtering chamber.

With reference to Fig. 2; The utility model provides a kind of operation principle of self-cleaning suction type filtering device following: the pressure difference switch 216 in the Differential Pressure Unit that self-cleaning suction type filtering device is provided with detects the inside and outside differential pressure of fie screen 105 in good time; When this pressure reduction meets or exceeds preset threshold; Electric cabinet 214 output control signals start electric rotating machine 7 driving dirt sucking device assemblies 6 and do spinning movement along the central axis of filter housings 203 or fie screen 105, and electric cabinet 214 output control signals start suction pump 211 simultaneously; Suction pump 211 begins suction; Strengthen blowdown chamber 108 relative suction functions to reach, suction nozzle 63 communicates with blowdown chamber 108 through suction nozzle support bar 65, dirt sucking tube 62 successively, thereby suction nozzle 63 is with respect to also becoming negative pressure state inside and outside the fie screen; Suction nozzle begins soil pick-up; Blow down to the blowdown chamber through suction nozzle support bar 65, dirt sucking tube 62 from the most of water and the dirty foreign material mixture of the inspiration of fie screen inwall successively by suction nozzle, extracted out by suction pump 211 via suction tube 209 again, realize powerful sludge, blowdown process simultaneously at this point; Carrying out along with soil pick-up, blowdown process; Inside and outside differential pressure progressively reduces; When the fie screen inside and outside differential pressure reached in the preset threshold, electric cabinet 214 output control signals correspondingly stopped action in order to the motor 7 that stops the rotation, dirt sucking device assembly in good time, close hydraulic control valve suction pump 211; The pumping function that this suction pump 211 is produced also quits work thereupon, when this pressure reduction increases to aforesaid threshold values next time, repeats above-mentioned action once more.Aforementioned content is the anti-cleaning process of electronic or automatic control to fie screen, can certainly be manual control, because the mode that controls start and stop not is the emphasis of the utility model, is not described in detail in this.In the process of aforementioned filtration; Those external diameters greater than suction nozzle 63 and the dirty foreign material of the larger particles in fie screen 105 mesh gaps under the effect of current deflecting and self gravitation; Concentrate to sand trap cavity 108 gradually; Behind certain hour, can manually or electronic open sand excluding valve door 109 and open sediment ejection opening, directly discharge the dirty foreign material of coarse granule that concentrate in the sand trap cavity 108 from sediment ejection opening.

Generally speaking; Self-cleaning strainer wants all to realize above-mentioned functions, also needs the device of in good time detection inside and outside differential pressure, when this pressure reduction meets or exceeds preset threshold; The electronic control unit output signal of telecommunication; Above-mentioned rotary drive motor 7 drives dirt sucking device assembly 6 and does the axial screw translation, and electromagnetism blowoff valve 11 is opened, and dirt sucking device assembly 6 is started working; Inside and outside differential pressure progressively reduces subsequently; Rotary drive motor 7 drives and correspondingly stops action after dirt sucking device assembly 6 resets in good time; Electromagnetism blowoff valve 11 cuts out, in order to avoid influence normal recirculated water filter efficiency, when this pressure reduction increases to aforesaid threshold values next time, moves again; Because device that these are additional and the direct purpose of the utility model are irrelevant, repeat no more at this.

Its main feature of above-mentioned self-cleaning suction type filtering device is following:

1. blowdown chamber 108 is water system pressure communicates condition with atmospheric pressure under, and self can produce relative negative pressure the blowdown chamber, and like this, the suction nozzle that communicates with the blowdown chamber will produce suction, and the inner surface of fie screen is sucked the suction thing;

2, suction pump 211 can significantly increase the pollution discharge capability of soil pick-up and the utility model of suction nozzle 63; And can be in suction pump 211 effective lifts, usual manner capable of using is regulated the suction force that suction pump 211 produces;

3, suction nozzle is comprehensive has carried out suck cleaning to the fie screen inner surface, simultaneously, also has current and is wearing dirty foreign material from the fie screen appearance and be inhaled into suction nozzle;

4, external diameter, is concentrated to sand trap cavity under the effect of current deflecting and gravity greater than the dirty foreign material of the coarse granule in suction nozzle and fie screen inner surface mesh gap gradually, can select manually or automatically directly to discharge;

5, the online anti-cleaning device of the self-cleaning suction type filtering device of the utility model only consumes seldom part water, and water system can also be worked when anti-the cleaning as usual, can not influence the normal filtration work of the utility model.

Claims

1. a self-cleaning suction type filtering device comprises filter house, dirt sucking device assembly; 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 rotationally, 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; It is characterized in that: comprise that also is positioned at the sand trap cavity that said fine filtering chamber is terminal and communicate with the fine filtering chamber, said coarse filtration chamber, fine filtering chamber, sand trap cavity height reduce gradually.

2. a kind of self-cleaning suction type filtering device according to claim 1, it is characterized in that: also comprise suction pump, said suction pump is arranged on the filter outside, and the suction tube of suction pump communicates with said blowdown chamber.

3. any self-cleaning suction type filtering device according to claim 1 and 2 is characterized in that: near the bottom of an end in said coarse filtration chamber a support in order to increase is set at filter.

4. a kind of self-cleaning suction type filtering device according to claim 3; It is characterized in that: electric rotating machine drives said dirt sucking device assembly through driving connecting rod and rotates; Said suction nozzle is the strip suction nozzle; And communicate with said dirt sucking tube through the suction nozzle support bar, the length sum of each suction nozzle is slightly larger than the length overall in fine filtering chamber.

5. a kind of self-cleaning suction type filtering device according to claim 4 is characterized in that said fie screen does not have the end cap structure for the tubular two ends, and an end of fie screen communicates with coarse strainer, and the other end and sand trap cavity communicate; Said dirt sucking device assembly is arranged on the central axis of tubular fie screen.