CN2078192U - Revolving filtering net with mechanical cleaning dirty mechanism - Google Patents

Abstract

The utility model relates to a revolving filtering net with a mechanical dirt cleaning mechanism, which is used for filtering the sundries in water. The utility model is technically characterized in that channels on a net core are composed of annular gaps between metal rings which are arranged on a cylindrical metal frame in the horizontal direction. The interior of the dirt discharging chamber of the filtering net is provided with the mechanical dirt cleaning mechanism which is composed of a dirt cleaning frame and dirt cleaning short rods, wherein, each dirt cleaning short rod is inserted into the annular gap between the metal rings. When the net core is rotated, the dirt cleaning short rods peel the sundries adhered on the net core away, and then, as a dirt discharging gate is opened, the sundries collected in the dirt discharging chamber is discharged under the action of backwashing of water. Consequently, the net core of the filtering net is kept clean, and the normal circulation of water is ensured.

Description

Revolving filtering net with mechanical cleaning dirty mechanism

The utility model is that the remove contamination rotation of mechanism of the band machinery that is used for filtered water filters net.

The a large amount of cooling waters of each industrial department such as chemical industry, metallurgy, electric power, papermaking, these cooling waters are mostly from great river, sea, lake.Many local agriculturals, the civilian place of also using every these water of usefulness of these water, all must be with filtering net, because contain a large amount of various foreign material in these water, if do not filter, the very fast inlet with equipment of these foreign material stops up, water can't normally be circulated, have a strong impact on the normal operation of equipment, even cause the accident.So each department such as industrial, agriculture, civilian uses the filtration net of all size, various types in a large number.

The common feature of the various filter screens that use is at present, is drilled with many apertures on metallic plate, leans on these apertures water filtration.These disadvantage that filter net are that in case these apertures are stopped up by foreign material, the cleaning of itself has become problem.The fixed filtration net of installing as present pump entrance, in case mesh blocked after, have to stop pump, open and filter the net square, take out web-roll core, carry out hand sweeping, time-consuming, take a lot of work, take can, influence the normal operation of equipment.

A large amount of waters in the modern thermal power plant for purifying these water, are often established the 2-3 road and are filtered net, turbine condenser inlet cooling water secondary net particularly, and the ashamed good bosom of its worker is directly connected to the safety and economic operation of whole generating factory.People have carried out number of research projects for the purifying water effect that improves this secondary net and other index, have invented the filtration net of some forms, as negative pressure backpulsing, Hough butterfly valve type, tangentially filter net formula etc.But even more welcome negative pressure backpulsing filters net, in case when containing a large amount of foreign material in the water, filter net surface and also be difficult to keep clean, because the contamination district is bigger, the circulation that the influences water demifacet condenser of having to stop carries out hand sweeping.Facts have proved in a large number, resemble eddy current and the backwash of depending merely on water the present various filtration nets and be difficult to keep filtering the net surface cleaning, be difficult to adapt to the more occasion of foreign material in the water.

The purpose of this utility model is exactly to solve existing these shortcomings of knowing altogether that filter net, can not only guarantee to filter the purifying water effect and the screen surface cleaning of net, and accomplish and do not stop not hand sweeping of equipment, and simple to operate easy to maintenance, water amount of blowdown is few.

In order to realize its purpose, the utility model changes in traditional filtration net, by opening that aperture comes the structure of filtered water on the metallic plate and filtered water is come in the annular gap of using instead on the web-roll core, and in order to remove better, added the cover machinery mechanism that removes contamination attached to the foreign material on the web-roll core.

Its concrete structure is such, settles a little quoits by horizontal direction on the metal framework of garden tubular, forms annular space between quoit and the circle.Quoit is that pressed metal line or metallic plate process, and the flow direction of water flows from outside to inside, also can flow from inside to outside, sees concrete structure and decides.The former the time blowdown chamber be arranged in the web-roll core when being arranged in the outer latter of web-roll core.In order more effectively to remove the foreign material be attached on the web-roll core, blowdown is indoor is equipped with the machinery mechanism that removes contamination, and it is made up of the decontaminating frame and the quarter butt of removing contamination, decontaminating frame and to remove contamination between the quarter butt be that each quarter butt of removing contamination of soft shape connection is inserted in the annular gap between the quoit.Web-roll core is rotating, decontaminating frame be fix when web-roll core rotates, the quarter butt of removing contamination just strips down the foreign material that are attached on the web-roll core, at this moment one opens sewage door, just by the backwash of water, these foreign material is discharged to outside the system.Rotating web-roll core can be with electronic, also available manually, the view core is big or small and decide.General oil cooler inlet, pump entrance filter net with manually in the thermal power plant, and condenser inlet secondary net adopts electronic, need adopt deceleration device when electronic.

Characteristics of the present utility model are that 1 purifying water effect is good, and is because the gap along water (flow) direction is the 3-4 millimeter between the quoit, than the aperture 6-8 millimeter on traditional filtration net web-roll core, half as large.

2 owing to there is a cover machinery mechanism that removes contamination, and in time the foreign material that are attached on the web-roll core stripped down, so can keep the web-roll core surface cleaning, accomplishes not have the contamination district, and water resistance is low.

3 is little with the like product specific volume, is convenient to install, and easy to manufacture, Operation and Maintenance is simple.

Accompanying drawing is one embodiment of the present of invention schematic diagrames.It comprises (1) shell, (2) decontaminating frame, (3) blowdown chamber (4) remove contamination quarter butt, (5) web-roll core, (6) inlet short tube, (7) quoit, (8) outlet short tube, (9) sewage door

The direction of current is from outside to inside in the accompanying drawing, and the web-roll core rotation direction is clockwise.

Claims (3)

1, a kind ofly filters net with the remove contamination rotation of mechanism of machinery, it comprises inlet short tube, outlet short tube, shell rotating mechanism, blowdown chamber, sewage door, web-roll core etc., it is characterized in that the passage of the water on the web-roll core is made up of the annular gap, the machinery mechanism that removes contamination is housed on the blowdown chamber.

2, the remove contamination rotation of mechanism of band machinery according to claim 1 filters net, it is characterized in that, the annular gap on the web-roll core is on the metal framework by the garden tubular, the quoit and quoit formation arranged by horizontal direction.

3, the remove contamination rotation of mechanism of band machinery according to claim 1 filters net, it is characterized in that the mechanism that removes contamination is made up of the decontaminating frame and the quarter butt of removing contamination, and each quarter butt of removing contamination is inserted in the gap between the quoit.