CN2253752Y - Suction cleaning type fixed plain plate screen net - Google Patents

Abstract

The utility model relates to a device for filtering dirt in water of the industrial ground surface, comprising a dirt trapping net barrier erected on a water leading channel and a net barrier dirt cleaning device, wherein, the dirt trapping net barrier is a metal screen net with a flat-plate structure, the dirt cleaning device is composed of a suction nozzle, a dirt-collecting bowl and a high-pressure submersible pump, the front edge port of the suction nozzle of the dirt cleaning device is arranged on the water flowing face of the net barrier, the dirt-collecting bowl and the high-pressure submersible pump are orderly communicated with the back part of the suction nozzle, and the dirt cleaning device can move up and down along the water flowing face of the net barrier. The utility model has the advantages of simple structure, good dirt cleaning effect, little installation and maintenance and low cost and can completely replace the public dirt cleaning and filtering device, being applied to industrial water fields with different hydrological conditions.

Description

Suction dirt eliminating fixed flat planar filter screen

The utility model belongs to liquid filtration device field, relates to the dirty foreign material filter of a kind of industrial surface water liquid.

Often need the usefulness of a large amount of water liquid as cooling, cleaning or the dip-dye etc. of equipment and product in the industrial production, because its water supply volume is very huge, the water intaking in this field has at present turned to by tapping ground water resources and has quoted surface water.Surface water is from rivers,lakes and seas, a large amount of dirty foreign material of generally all carrying under one's arms in it, and such as trees, spoil, domestic refuse etc., before thoroughly not removing these dirty foreign material, in fact surface water can not be introduced into commercial Application.

Cleaning to surface water quality realizes by serial filter at present, and wherein a class device is made of less than the steel grid of 10mm or the aperture metallic mesh less than 10mm size between grid, can be used for tackling the less dirty foreign material of size.Filter, after using certain hour, dirty foreign material promptly can be gathered on the stratum reticulare, form to block, and influence the filtering effect, thereby also just exist the problem of regularly removing contamination.What the utility model content related to is the problem of removing contamination of this class filter.Known in the past such filter with the structure of removing contamination has two kinds, promptly changes brush sewage disposal apparatus and rotary sieve device.Commentaries on classics brush sewage disposal apparatus is primarily aimed at the steel grid structure in the existing filter and establishes, it is characterized in that the steel grid stand is fixed in the derivation conduit both sides, being provided with one on the upstream face of steel grid can brush along the slip that the grid face slides from bottom to top, to be gathered in after dirty foreign material on the grid release the water surface by the brush that slides during work, and by the brush body of a rotation dirty foreign material be brushed to revolve to brush down by slip again and make them fall into sewage sump then to flow away.The rotation sewage disposal apparatus is primarily aimed at the net grid structure in the existing filter and establishes, it is characterized in that the net grid are ring bodies of a closure, be installed in and be divided into water channel up and down in two rotating shafts at position, assembling when the upstream face of net grid has more dirty foreign material and causes when having greatly the liquid difference before and after the wire side, the net grid are activated does one-directional rotation, make the dirty foreign material on the net grid upstream face be taken out of the water surface, and be provided with water jetting at high pressure mechanism in the inboard on net top, after this mechanism opens dirty foreign material are dashed from wire side, then they are sent in the sewage sump and flow away.Except that above-mentioned two kinds of filters, a kind of novel filter screen that is called the cydariform filter screen has abroad appearred again in recent years, big drum of this filter screen likeness in form, the face of cylinder of drum is provided with the net grid, the shaft core position of cylinder then is provided with a rotating shaft, and the rotating shaft with the cydariform net during installation flatly is set up in the water channel both sides, makes its top on the water surface, remainder is then put not in water to tackle dirty foreign material, the roughly same rotary sieve of the process of removing contamination of this filter screen.

In above-described prior art, change brush sewage disposal apparatus and rotary sieve device the structure more complicated, mechanical wear is serious, fault rate is high, civil engineering and pre-buried expense are big, install and the difficulty of maintenance also bigger; For changeing the brush sewage disposal apparatus, if dirty foreign material are when having the larger area tympan, the effect of then removing contamination is undesirable; Though cydariform net structure is simple relatively, wearing and tearing are little, its difficulty of processing is very high, and domestic still do not have production capacity at present, and its cost and the pre-buried expense of civil engineering are also well beyond preceding two kinds of filter net devices.

The purpose of this utility model is at above existing in prior technology defective, provides a kind of infant industry surface water rational in infrastructure, cheap, that remove contamination effective dirty foreign material filter---suction dirt eliminating fixed flat planar filter screen.

The technical solution that realizes the foregoing invention purpose is such: this suction dirt eliminating fixed flat planar filter screen has a derivation conduit and cuts dirty net grid and a net grid dirt clearing machine, wherein the net grid are the metal screen of one side slabbed construction, during installation it erectly is fixedly mounted on the derivation conduit both sides, the bottom of net and derivation conduit bottom link the horizontal plane when top then exceeds the derivation conduit peak level; Dirt clearing machine is made up of suction nozzle, dirt collecting bucket and high pressure diving pump, and the preceding beak mouth of suction nozzle is located on the upstream face of net grid, and dirt collecting bucket and high pressure diving pump then are communicated in the rear portion of suction nozzle successively; Dirt clearing machine can be done along net grid upstream face under the exterior power source effect and move up and down, and when not working, dirt clearing machine should rest on more than the water surface at ordinary times.In industrial surface water filtering process, cause when the more dirty foreign material of wire side absorption when pressure reduction reaches predetermined value before and after the wire side, dirt clearing machine is activated and moves down along wire side, and after arrive the water surface, submersible pump starts, and begins to aspirate the process of removing contamination.When removing contamination, dirt clearing machine at the uniform velocity moves down along wire side, and the dirty foreign material full scale clearance that is gathered in dull and stereotyped screen surface is sucked in the dirt collecting bucket, and water liquid is then discharged by submersible pump.Dirt clearing machine stops aspiration procedure during down to predetermined altitude, and whole then dirt clearing machine rises, reposition.The dirt-collecting vehicle that then is attached to water channel one side moves along filter screen, make sewage sump on the car just in time extend the below of dirt clearing machine dirt collecting bucket, then the work by being equipped on scouring electromagnetic valve on the dirt collecting bucket etc. is dashed dirty foreign material to sewage sump and is flowed away again, and a complete course of work is through with.

Compared with prior art, advantages such as (containing the pre-buried process of product and civil engineering thereof) that device described in the utility model has is simple in structure, it is effective to remove contamination, the installation and maintenance amount is little, cheap can substitute fully and aforesaidly knownly block dirty filter and be applied to the industrial water use field of different hydrological conditions.

Below with reference to accompanying drawing the utility model content is described further.

Fig. 1 is the side direction structural representation of a specific embodiment of the utility model.

Fig. 2 is the installation form schematic diagram of net gate part among Fig. 1.

As shown in the figure, this suction dirt eliminating fixed flat planar filter screen is made up of flat metal net grid 1 and net grid dirt clearing machine two parts mechanism.Net grid 1 are vertically mounted on derivation conduit 7 both sides, and the bottom of its underpart and derivation conduit 7 links, and top then exceeds derivation conduit horizontal plane (Fig. 2), and size of mesh opening is identical with the size of mesh opening of known rotary sieve on the net grid.Dirt clearing machine is a dirty mechanism of the drawing-in type collection that can move up and down along net grid 1 upstream face, and it comprises suction nozzle 2, dirt collecting bucket 3 and high pressure diving pump 4 three parts.Suction nozzle 2 be shaped as fowl beak shape, be that beak portion is long slightly on it, stretch the upstream face place that contacts net grid 1, following beak portion is short slightly and have an a pipeful of concavity inner chamber, adopt this structure both can eliminate the pressure that current form dirty foreign material, make the easier wire side that is sucked from of dirty foreign material, can form in beak portion under the suction nozzle again and reflux, dirty foreign material are had simultaneously leave the tendency that wire side moves in suction nozzle.Dirt collecting bucket 3 and high pressure diving pump 4 are communicated in the rear portion of suction nozzle successively, to the passage of 4 sections on submersible pump, be provided with a filter screen 5 at dirt collecting bucket 3, after the water liquid that has dirty foreign material enters dirt clearing machine by suction nozzle 2, water from the filter screen 5 at dirt collecting bucket 3 rear portions by being discharged by submersible pump 4 then, dirty foreign material then by 5 grades of filter screens in dirt collecting bucket 3.Label 6 is a check valve that is located on suction nozzle 2 and 3 interface channels of dirt collecting bucket among Fig. 1, can be used for stoping the liquid that enters in the dirt clearing machine to reflux.In concrete enforcement of the present utility model, for further improving the effect of removing contamination of device, also can consider on the back side of net grid 1, to set up a water jetting at high pressure device with the synchronous mobile working of dirt clearing machine, like this when dirt clearing machine is to the suction of wire side dirt foreign material, by net grid 1 back side grid is washed away again by the water jetting at high pressure device, make the clean-up capability of device better.

Claims (4)

1, a kind of industrial suction dirt eliminating fixed flat planar filter screen that is used for the filtering surface water has a derivation conduit and cuts dirty net grid (1) and a net grid dirt clearing machine, it is characterized in that the metal screen of net grid (1) for the one side slabbed construction; Dirt clearing machine is made up of suction nozzle (2), dirt collecting bucket (3) and high pressure diving pump (4), and the beak mouth is located on the upstream face of net grid (1) before its suction nozzle, and dirt collecting bucket (3) and high pressure diving pump (4) are communicated in the rear portion of suction nozzle (2) successively; Dirt clearing machine can be done along net grid upstream face and move up and down.

2, suction dirt eliminating fixed flat planar filter screen according to claim 1, what it is characterized in that suction nozzle (2) is shaped as fowl beak shape.

3, suction dirt eliminating fixed flat planar filter screen according to claim 1 is characterized in that being provided with a filter screen (5) at dirt collecting bucket (3) to the passage of submersible pump (4) section.

4, suction dirt eliminating fixed flat planar filter screen according to claim 1 is characterized in that being provided with check valve (6) on the interface channel of suction nozzle (2) and dirt collecting bucket (3).