CN2493650Y - Fully autoamtic washing free filter - Google Patents

Abstract

The utility model relates to a water filter which has functions of automatic filtration, pollution cleaning and pollution discharging and can automatically clean impurities attached on a filter sieve without affecting equipment water supply. The water filter comprises a rotary filter sieve (2), pressure water washing port (3) fastened on a cylinder wall and a pollution cleaning joint (4) arranged in a cylinder. Pollutants attached on the filter sieve are scratched off with a piece-shaped scraper (5) at first, and then washed with high pressure washing water reversely to remove completely. The equipment has operating conditions of automatic timing pollution cleaning, pressure gap control and cleaning and manual control pollution cleaning, which can be also controlled in a long distance and run without human operation.

Description

Automatically exempt from filter rinsed

The utility model be a kind ofly have automatic fitration, remove contamination, the strainer of dirt eliminating function.Can not shut down at watering equipment and finish self remove contamination, blowdown work under the impregnable situation of normal water supply automatically, and the overcurrent part need not clean, for a long time operate as normal.This strainer needing to be used for a large amount of water systems that consume the industrial equipment of water.Because of its automaticity height, be specially adapted to the unmanned control and the distant place control of equipment.

The water system of water intensive industry equipment, its water source are generally the river and the reservoir of nature, though the water that is supplied through a coarse filtration, still has a certain amount of suspension to exist, if do not manage to remove, and will normally counteracting to equipment.

For addressing this problem, once adopted automatic filter.Because the suspension in the water mostly is pasture and water or fibres for fabrics etc., attached on the filter screen time, to pass opening of sieve mostly and hang attachedly on it, matter is soft and certain length arranged.At this time, only adopt the back flush of high pressure clean water can not be rapidly, eliminate fully with it.Thereby after certain running time, the operations staff must take out filter screen by artificial cleaning, causes a lot of inconvenience, also influences the normal operation of equipment.Simultaneously, this equipment also exists the problem of being introduced press water by rotating part, and complex structure also is easy to generate leakage.

The purpose of this utility model be to provide a kind of and novel have automatic fitration, remove contamination, the strainer of dirt eliminating function, it can remove filter screen inside and outside dirt and attachment automatically, effectively, guarantees the automatic stabilisation operation of supply equipment.

The purpose of this utility model is achieved in that the filter screen and the reductor direct connection of strainer, and circle has fixing horn-like interface in the filter screen, and this interface is corresponding with press water rinse mouth on the cylindrical shell, and with strainer body between separate space also corresponding.Strainer body is provided with strip outward and scrapes dirty cutter.When needs were removed contamination, reducer drove filter screen and slowly rotates, and scrapes the attachment that dirty cutter scrapes off the filter screen cylindrical by strip earlier.Then, the water inlet motor operated valve is opened cut-in pressure water backwashing filter screen, makes the interior dirt of a certain separate space of filter screen enter horn-like interface, and enters blow-off pipe.Like this number step is till dirt in the separate space rinses well between all in filter screen.The utility model can be accomplished: in the time of setting, self-timing is removed contamination (1); (2) controlling automatic differential pressure control by the differential pressure controller that is contained in intake-outlet removes contamination.(3) on-site manual control is removed contamination; (4) self-timing and differential pressure are controlled the paired running of removing contamination; (5) the too high automatic warning of differential pressure, the undesired automatic warning of retarder operation etc.

Concrete structure of the present utility model and working condition are provided by accompanying drawing.

Fig. 1 is the facade and the sectional drawing of this strainer, the section plan of this strainer of Fig. 2.As can be seen from the figure: reducer (1) and filter screen (2) direct connection, the Sliding bush (5) that two circles are made up of self-lubricating material is housed on the filter screen (2), fixed horn-like interface (4) is arranged in the filter screen, and it is corresponding with press water rinse mouth (3), and also with strainer body between separate space corresponding.Filter screen is equipped with a strip outward scrapes dirty cutter, and the distance of the edge of a knife and filter cylinder body is the 2-5 millimeter, in the import and export of strainer pressure measurement water pipe and differential pressure controller (6) is arranged, and returning apparatus has electrically operated valve on press water cleaning hose and blow-off pipe.

When usual the filtration, filter screen does not rotate, and two motor operated valves all cut out.Removing contamination during operating mode of setting, the blowdown motor operated valve is opened, reducer drives filter screen and rotates, and strip is scraped dirty cutter and earlier the attachment of filter screen outer wall struck off, and separate space runs to and rinse mouth (3) when between filter screen, during horn-like interface (4) correspondence position, the flushing motor operated valve is opened, the water under high pressure back flush filter screen of cleaning, and the remaining dirt that is attached on the filter screen is thoroughly removed clean, all dirts are discharged through the horn-like blowoff valve that is interfaced to, and can realize differential pressure control by the differential pressure display; Can realize timing controlled by programmable logic controller; Can realize operating manually by manual-operating mechanism.

The utility model can be widely used in the technical water supply system of the bigger equipment of some water supply volumes such as power plant, steel mill, paper mill owing to its simple in structure, easy for installation, on duty, reliable operation of need not safeguarding, not choose.

Claims (5)

1, a kind ofly have automatic fitration, remove contamination, dirt eliminating function automatically exempt from filter rinsed.This strainer has a rotatable filter screen (2) that is driven by reducer (1), and fixing trumpet-shaped interface (4) is arranged within it, has strip to scrape dirty cutter (8) outside it.It is characterized in that horn-like interface (4) is corresponding with press water rinse mouth (3), and with of filter screen (2) between separate space also corresponding.

2, the filter rinsed of automatically exempting from according to claim 1 is characterized in that: being contained in the outer dirty cutter of scraping of filter screen is strip, and the distance of the edge of a knife and cylindrical shell is the 2-5 millimeter.

3, the filter rinsed of automatically exempting from according to claim 1 is characterized in that: filter screen and reducer direct connection.

4, the filter rinsed of automatically exempting from according to claim 1 is characterized in that: the Sliding bush that two circles are made up of self-lubricating material is housed on the rotatable filter screen.

5, the filter rinsed of automatically exempting from according to claim 1, it is characterized in that: press water import and sewage draining exit are equipped with electrically operated valve, and have the differential pressure display.