CN1235660C - Backwash net-type filter - Google Patents
Backwash net-type filter Download PDFInfo
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- CN1235660C CN1235660C CN 02125390 CN02125390A CN1235660C CN 1235660 C CN1235660 C CN 1235660C CN 02125390 CN02125390 CN 02125390 CN 02125390 A CN02125390 A CN 02125390A CN 1235660 C CN1235660 C CN 1235660C
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- dirt
- filter
- type filter
- net
- collecting pipe
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Abstract
The present invention discloses a filter, particularly a filter which has the function of automatic cleaning for a micro irrigation system. The filter comprises a water outlet 1, a water inlet 2, a filter screen 4, a valve 7, a drain port 8 and a casing 14. The present invention is characterized in that a rotary dirt collecting tube 12 which is led to the drain port 8 is arranged in the filter screen 4; a dirt absorbing channel 11 communicated with the rotary dirt collecting tube is arranged on the rotary dirt collecting tube 12; the dirt absorbing channel 11 can have an eccentric angle alpha; the rotary dirt collecting tube 12 can be connected with a rotary power source. The filter has the advantages of reasonable structural design, favourable cleaning effect, high automation, low price, energy saving, etc.
Description
Technical field
The present invention relates to a kind of filter, particularly a kind of filter that is used for irrigation system.
Background technology
Filter is a part important in the irrigation system, and its major function is that impurity in the irrigation water and dirt are filtered, and makes water quality meet the requirement of irrigation system.Filter commonly used in the agricultural irrigation mainly contains three kinds: well strainer, sand filter and water sand separator.Wherein well strainer is the most generally use a kind of.
The principle that well strainer filters is, in well strainer, a screen net arranged as filter screen, and addle is by filter screen the time, and the impurity in the water is trapped within on the filter screen, and clear water flows in the irrigation conduit of downstream.
The cleaning of well strainer, generally adopt following way:
(1) first kind for to remove out filter screen from filter, artificial flushing; Advantage is that filtration device structure is simple, and cost is low.Shortcoming is to need to shut down, manually-operated, under a lot of situations owing to when can not get in time cleaning, cause filter to damage and system jams.
(2) second kinds for utilizing automatic controller and magnetic valve, at regular intervals or poor according to the filter inlet and outlet pressure, opens the blowoff valve on the filter automatically, and dirt is flushed out filter.The shortcoming of this axial purging method is that the part dirt that is dammed on the net is difficult to be rinsed.
(3) the third in order to improve filter effect, has installed a hairbrush in filter screen, filter screen is scrubbed in hairbrush rotation automatically under the effect of electric driver in the flushing process, and the shortcoming of this method is to be attached to online organic matter for some, very difficult brush falls, and developing result is relatively poor.
(4) the 4th kinds, in order to accomplish the flushing of edge work limit, people are with the use in parallel of several well strainers, and some filters are worked, some filter backwashes.So not only increase cost, and complicated operation.
Summary of the invention
The objective of the invention is to provide a kind of backwash net-type filter, and it does not need manual cleaning, and can clean up automatically.
Comprise in order to reach the technical scheme that purpose of the present invention takes: comprise delivery port 1, water inlet 2, filter screen 4, valve 7, sewage draining exit 8, shell 14, it is characterized in that, be provided with the rotation dirt collecting pipe 12 towards sewage draining exit 8 in filter screen 4, be provided with dirt absorption road 11 on this rotation dirt collecting pipe 12, this dirt absorption road 11 communicates with rotation dirt collecting pipe 12; Dirt absorption road 11 can be eccentric angle α; Rotation dirt collecting pipe 12 can link to each other with rotating power source.
Comprise in order to reach the another kind of technical scheme that purpose of the present invention takes: comprise delivery port 1, water inlet 2, filter screen 4, valve 7, sewage draining exit 8, shell 14, it is characterized in that, in filter screen 4, be provided with towards sewage draining exit 8 can axially movable rotation dirt collecting pipe 12, on this rotation dirt collecting pipe 12, be provided with dirt absorption road 11, this dirt absorption road 11 with rotate dirt collecting pipe 12 and communicate; Dirt absorption road 11 can be eccentric angle α; Rotation dirt collecting pipe 12 can link to each other with rotating power source.
Being provided with bidirectional screw between rotation dirt collecting pipe 12 in second kind of backwash net-type filter and the bearing 13 thereof cooperates.
In the above-mentioned backwash net-type filter, can connect centrifugal blow-off pipe 9 in the end of rotation dirt collecting pipe 12, the two ends of this centrifugal blow-off pipe 9 oppositely respectively are provided with an outlet.
Can also comprise differential pressure pickup and controller 6 in the above-mentioned backwash net-type filter, this moment, valve 7 was a magnetic valve.
Rotating power source described in the above-mentioned backwash net-type filter is a motor 15.
Between water inlet 2 and filter screen 4, be provided with coarse filtration net 3 in the above-mentioned backwash net-type filter.
Because the setting in rotation dirt collecting pipe 12 and dirt absorption road 11, formed the pattern of backwash, this is different fully to the method for washing or scrub with traditional direct-axis, can will rinse out attached to the another side of the dirt on the filter screen from filter screen, utilize this backwashing manner, dirt is easier to be cleaned.Because dirt absorption road 11 is eccentric angle α, i.e. exocentric structure design, rotation dirt collecting pipe 12 rotations automatically under the effect of water pressure, then dirt adsorbs road 11 automatic scan filter screens, need not supporting rotary power equipment, only just accomplished the limit filtration, the limit backwash with a filter.So the present invention has reasonable in design, cleaning performance is good, the automaticity height, and low price is saved advantages such as the energy.
Description of drawings
Fig. 1 is a kind of structural representation of backwash net-type filter of the present invention;
Structural representation when Fig. 2 can move axially for the rotation dirt collecting pipe of backwash net-type filter of the present invention.
The structural representation of the control section when Fig. 3 disposes motor for backwash net-type filter of the present invention.
Fig. 4 is the partial enlarged drawing of B among Fig. 2.
Fig. 5 is the A-A cutaway view of Fig. 1.
Specific embodiments
As shown in Figure 1,1 is the delivery port of this filter, and 2 is water inlet, 3 are the coarse filtration net, 4 is filter screen, and 5 is the dirt of holding back, and 6 is differential pressure pickup and controller, 7 is magnetic valve, 8 is sewage draining exit, and 9 is centrifugal blow-off pipe, and it is the centrifugal delivery port of reaction of sewage, at the two ends of this pipe a delivery port is arranged respectively, delivery port is positioned at the opposition side of pipe, and 10 is the dirt collecting chamber, and 11 are dirt absorption road, it is hollow flow passage or the pipe that certain eccentric angle is arranged, 12 are rotation dirt collecting pipe, and it places in the filter screen 4 by bearing 13, communicate with dirt absorption road 11, and to lead to sewage draining exit 8,14 through centrifugal blow-off pipe 9 and dirt collecting chamber 10 be shell.In the present embodiment, dirt absorption road 11 is two slice structures, their inlet is distributed in the whole piece axis of filter screen 4, do not dispose rotating power source in the present embodiment, then dirt absorption road 11 is eccentric angle α (see figure 5), like this, just can produce rotary centrifugal force when sewage pours dirt absorption road 11, thereby realize 12 rotations of rotation dirt collecting pipe, make dirt absorption road 11 scanning whole filtering net.
As shown in Figure 2, the length of rotation dirt collecting pipe 12 is longer, and it can guarantee that it axially movablely normally carries out, and it moves axially is to cooperate by the bidirectional screw that is provided with between rotation dirt collecting pipe 12 and the bearing 13 thereof to realize.Because the rotation dirt collecting pipe of backwash net-type filter of the present invention can move axially, then dirt adsorbs the whole piece axis of the unnecessary distribution filter screen 4 of inlet in road 11, and dirt absorption road 11 can be done smallerly like this, not only economizes material, and has reduced resistance.Certainly, rotate moving axially and otherwise to realize of dirt collecting pipe 12, as cam link formula structure.
As shown in Figure 3,15 is motor, and it can replace the exocentric structure design in dirt absorption road 11, and as the rotating power source of rotating dirt collecting pipe 12.
The operation principle and the course of work of apparatus of the present invention are: dirt absorption assembly is a core of the present invention in the filter, this dirt absorption assembly is adsorbed four parts such as (or pipe or mouth) 11, rotary dirt collecting pipe 12, centrifugal blow-off pipe 9, bearing 13 to be made up of (as Fig. 1 dirt, Fig. 2, Fig. 3).When the pressure reduction inside and outside the filter filter screen reaches predefined numerical value (by the differential pressure pickup perception), sewage draining exit 8 is opened (utilizing the existing controller function magnetic valve 7 in market to realize) automatically, because after sewage draining exit 8 is opened, the pressure in filter screen 4 outsides is far above the pressure in the dirt absorption assembly, the water in filter screen 4 outsides will be under the effect of this differential water pressures, the outside by filter screen 4 enters dirt absorption road 11 by filter screen 4 at a high speed, and the dirt that will be trapped in filter screen 4 inboards is brought centrifugal dirt absorption road 11 into, because the off-centre in centrifugal dirt absorption road 11, under the effect of this water pressure, centrifugal dirt absorption road 11 is together with 12 rotations automatically of rotation dirt collecting pipe, centrifugal absorption road scanning whole filtering net, the dirt absorption that is trapped in filter screen 4 inboards is entered dirt collecting chamber 10 by centrifugal blow-off pipe 9 (also claiming reaction centrifugal outlet), dirt is discharged by sewage draining exit 8.The purpose of the centrifugal outlet of reaction is to strengthen the rotation of dirt absorption assembly.When the pressure reduction inside and outside the filter screen reaches the filter screen setting value, close magnetic valve 7, rotation dirt absorption assembly quits work, and finishes flushing process.
Being provided with the operation principle of the rotation dirt collecting pipe that bidirectional helical cooperates and the operation principle of above-mentioned no screw thread rotation dirt collecting pipe distinguishes to some extent: under the effect of water pressure, dirt absorption assembly rotates automatically, under the effect that the bidirectional helical that rotates dirt collecting pipe 12 two ends cooperates, dirt absorption assembly from left to right moves (or from top to bottom then from top to bottom) then from right to left while rotating, and dirt adsorption tube 11 will scan whole filtering net 4 simultaneously.
The rotation of dirt absorption assembly can utilize the centrifugal force of foregoing description, also can utilize Motor Drive (as Fig. 3).
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can make amendment or be equal to replacement the technical solution of the utility model, and not breaking away from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (8)
1, a kind of backwash net-type filter, comprise delivery port (1), water inlet (2), filter screen (4), valve (7), sewage draining exit (8), shell (14) is characterized in that, in filter screen (4), be provided with rotation dirt collecting pipe (12) towards sewage draining exit (8), be provided with dirt absorption road (11) on this rotation dirt collecting pipe (12), this dirt absorption road (11) communicates with rotation dirt collecting pipe (12), and the inlet in dirt absorption road (11) is distributed in the whole piece axis of filter screen (4).
2, backwash net-type filter according to claim 1 is characterized in that, there is the bending of an angle (α) in dirt absorption road (11).
3, backwash net-type filter according to claim 1 and 2 is characterized in that, rotation dirt collecting pipe (12) links to each other with rotating power source.
4, backwash net-type filter according to claim 1 and 2 is characterized in that, connects centrifugal blow-off pipe (9) in the end of rotation dirt collecting pipe (12), and the two ends of this centrifugal blow-off pipe (9) oppositely respectively are provided with an outlet.
5, backwash net-type filter according to claim 1 and 2 is characterized in that, this filter also comprises differential pressure pickup and controller (6), and valve this moment (7) is a magnetic valve, and differential pressure pickup and controller (6) are used to control the keying of magnetic valve (7).
6, backwash net-type filter according to claim 1 and 2 is characterized in that, is provided with coarse filtration net (3) between water inlet (2) and filter screen (4).
7, backwash net-type filter according to claim 1 and 2 is characterized in that dirt absorption road (11) is slice structure, and it has one or more.
8, backwash net-type filter according to claim 1 and 2 is characterized in that dirt absorption road (11) is tubular structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02125390 CN1235660C (en) | 2002-07-31 | 2002-07-31 | Backwash net-type filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02125390 CN1235660C (en) | 2002-07-31 | 2002-07-31 | Backwash net-type filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1471994A CN1471994A (en) | 2004-02-04 |
| CN1235660C true CN1235660C (en) | 2006-01-11 |
Family
ID=34142873
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02125390 Expired - Fee Related CN1235660C (en) | 2002-07-31 | 2002-07-31 | Backwash net-type filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1235660C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331554C (en) * | 2005-12-19 | 2007-08-15 | 中国科学院遗传与发育生物学研究所 | Automatic backflush filtering net for micro irrigation |
| CN102974151A (en) * | 2011-09-02 | 2013-03-20 | 镇江市科能电力设备有限公司 | Suction-type self-cleaning filter |
| CN104771947B (en) * | 2012-09-04 | 2016-06-22 | 福建百川资源再生科技有限公司 | Pulse full-automatic backwash filter |
| CN104771946B (en) * | 2012-09-04 | 2016-04-27 | 福建百川资源再生科技有限公司 | Pulse full-automatic backwash filter |
| CN103335356B (en) * | 2013-07-11 | 2015-11-18 | 武汉光谷节能技术有限公司 | A kind of backwash scrubbing type water collecting and diversifying device |
| CN103657426B (en) * | 2014-01-03 | 2016-04-20 | 成都大学 | A kind of domestic sewage in rural areas ultrafiltration back purge system |
| CN110180250A (en) * | 2019-06-25 | 2019-08-30 | 鹿海洋 | Floatation element and floating material intercepting system for backwash |
| CN110508053A (en) * | 2019-09-29 | 2019-11-29 | 河北润农节水科技股份有限公司 | A kind of soil pick-up formula self-cleaning net type filter |
| CN114993791A (en) * | 2022-08-04 | 2022-09-02 | 自然资源部第二海洋研究所 | Sediment gap water autosegregation collection system |
-
2002
- 2002-07-31 CN CN 02125390 patent/CN1235660C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1471994A (en) | 2004-02-04 |
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