RU2478154C1 - Submersible water-intake filter - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: filter comprises a cylindrical body, the axis of which is arranged horizontally and in parallel to a flow of treated liquid, representing a shell, filtering elements and a washing accessory. Filtering elements are arranged of tubular form with the outer surface of filtering, represent slot grids, arranged in the form of a cylindrical spiral from a high-precision profile of a V-shaped form, and are fixed at two sides of the body. The washing accessory represents a T-shaped bracket, with two tubular frames installed on it with the possibility of rotation in bearing assemblies, on the sections of which arranged in parallel to filtering elements there is perforation.

EFFECT: increased reliability of device operation, simplified layout of a water-intake unit and higher efficiency of its cleaning from sludge ice and debris, and provides for protection of young fishes against ingress into a water-intake.

7 cl, 7 dwg

Description

The invention relates to hydraulic engineering, in particular to natural water purification devices, and is intended to protect a water intake structure from ingress of mechanical impurities, for example, sludge, and also to protect juvenile fish from falling into a water intake structure.

The task of any water intake facility is the uninterrupted supply of the required water consumption to consumers.

At the same time, measures aimed at preventing freezing and blocking of filter barriers with mechanical impurities and measures preventing juvenile fish from entering water intake structures have a special role in the successful operation of water supply systems.

There are known designs of water intake filters, a common feature of which is the presence of water-filtering surfaces - mesh, perforated or louvered, as well as means that prevent direct juvenile fish from contacting these surfaces.

Known water intake fish filter, containing at least one predominantly removable cartridge, the filtering surface of which is formed by the outer and inner parallel louvered surfaces, in which their component plates have an opposite angle, the installation step of the outer plates is twice as large as the inner one, and the distance between the outer and inner surfaces is equal to the pitch of the inner plates. Patent RU 2313634, IPC E02B 8/08, published December 27, 1997.

A water intake filter is known, which is a fixed mesh drum, inside of which a water-jet flute (means for washing the mesh cloth of the drum) is coaxially rotationally mounted. During operation, debris and fish, pressed by a stream of water to the outer wall of the drum, are periodically beaten by high-pressure water jets flowing radially from the flute holes to the drum. A.S. USSR 1528853, IPC E02B 8/08, published December 15, 1989

Known water intake fish filter, containing a rotationally mounted main mesh truncated cone, facing the apex to the intake, and means for washing its mesh, while inside the main cone are coaxially placed one in the other and the second and third mesh truncated cones combined with the main concurrently directed, while the smaller open base of the third cone is connected with the fish outlet, its larger base is connected to the smaller base of the second cone, which is diametrically equal to it, the larger base of which is connected EHO with a smaller base of the cone rybonapravlyayuschim annular main tray connected to rybootvodom hollow spokes. Patent RU 2208096, IPC E02B 8/08, published July 10, 2003.

The disadvantage of these devices is the low productivity and low cleaning efficiency of the filtering surfaces.

The objective of the invention is the creation of a submersible water intake filter that improves its operational characteristics, improves reliability and reduces the cost of its preventive maintenance (cleaning).

The problem is solved due to the fact that in the submersible water intake filter containing a cylindrical body, the axis of which is horizontally and parallel to the flow of the liquid being cleaned, which is a shell, filter elements, a washing device, filter elements are made tubular with an outer filtering surface, are slotted gratings made in the form of a cylindrical spiral from a high-precision profile of a V-shape and fixedly mounted on both sides of the housing, flushing device is a T-shaped bracket mounted on it rotatably in bearing arrangements the two tubular frames, for the filtering elements arranged in parallel sections which are formed perforations.

In addition, the T-shaped bracket is a distribution device designed to supply clean washing water, the temperature of which can be higher than the temperature of the liquid being cleaned, made of two perpendicular pipes, its vertical section is fixed coaxially inside the pipe on the brackets, the horizontal section is aligned with the filter housing, and the ends of the horizontal section are mounted on racks located in the shells.

In addition, the housing of the bearing assembly, which can be rotated around an axis — the horizontal portion of the T-shaped bracket, is made in the form of a stepped cup, on the generatrix of which sections of the tubes of the tubular frame fixed perpendicular to the horizontal portion of the T-shaped bracket are fixed, while at the intersection their axes in the horizontal section are made through holes, for example four.

In addition, the perforation is made in the form of two rows: one row of perforated holes is directed normal to the forming surface of the filter elements, the second row of perforated holes is angled with respect to the first row of holes and directed along the radius of the rotating circle to create a reactive force F, which causes the washing adaptation in rotation, and on one part of the frame holes are located to the left of the axis of rotation, and on the other - to the right.

In addition, the perforation is made in the form of one row of holes, while the axis of the holes are made at an angle α to the normal, and on one part of the frame the holes are located to the left of the axis of rotation, and on the other to the right.

In addition, the V-shaped profile creates a rigid screen with longitudinal slits of a strictly defined size, which can be made with a size of Δ = 100-5000 μm with a tolerance of a gap width of up to ± 15 μm.

In addition, the filter elements are made with a release biologically inert coating.

The invention is illustrated by drawings.

Figure 1 is a General view of a submersible intake filter.

Figure 2 - deposits on the surface of the filter element.

Figure 3 - washing the filter element.

Figure 4 is a cross section of a submersible intake filter.

Figure 5 - bearing assembly.

6 is a section bB filter element.

Fig.7 - perforated hole - option.

The submersible water intake filter includes a cylindrical housing 1, the axis of which is horizontally and parallel to the flow of the liquid being cleaned, which is a shell, to the lower part of which a pipe 2 is connected by welding to drain the purified water. On both sides of the housing 1, tube-shaped filtering elements 3 are fixedly fixed with an outer filtering surface, which are slotted gratings made in the form of a cylindrical spiral of a high-precision V-shaped profile with a biologically inert anti-adhesive coating, fixed by welding to supporting elements at each point their intersections, while the supporting elements are located in the inner cavity of the filter element 3, and the V-shaped profile creates a rigid screen with longitudinal slots strictly defined size, which can be made with a size of Δ = 100-5000 μm with a tolerance on a slit width of up to ± 15 μm.

At the other ends, the filter elements 3 are fixedly connected, for example, by welding to the shells 4, having additional supports 5 ending in the mounting cones 6. At the end of the shell 4, directed towards the flow of the liquid to be cleaned, the cowling 7, which is a truncated cone in the form of a truncated cone, is fixed, protects the filter from falling into its internal cavity of random large or long objects. At the end of the other shell, a cap 8 is fixed, having an elliptical shape.

For hoisting-and-transport operations, cargo ears 9 are welded to the shell of housing 1.

Inside the housing 1, a flushing device 10 designed for cleaning the filter element by water jets is installed, which is a T-shaped bracket 11 with two tubular frames 13 mounted on it with the possibility of rotation in four bearing units 12, on which the perforation sections are located parallel to the filter elements.

Moreover, in one embodiment, the perforation consists of two rows: one row of perforated holes 14 is directed normal to the forming surface of the filter elements and is intended for washing the filter; the second row of perforated holes 15 is located at an angle with respect to the first row of holes and is directed along the radius of the rotating circle to create a reactive force F, which causes the tubular frames 13 to rotate, and on one part of the frame the holes are located to the left of the axis of rotation, and on the other to the right .

In the second embodiment, the perforation can be made in the form of one row of holes made at an angle α to the normal, while washing the filter elements and creating a reactive force will be carried out by one row of holes, and on one part of the frame the holes are located to the left of the axis of rotation, and on the other is on the right.

The T-shaped bracket is a distribution device designed to supply clean washing water, the temperature of which can be higher than the temperature of the liquid being cleaned, made of two perpendicular pipes, its vertical section 16 is fixed coaxially inside the pipe 2 on the brackets 17, the horizontal section 18 is located coaxially with the housing 1, and the ends of the horizontal section 18 are mounted on racks 19 located in the shells 4.

The composition of the bearing assemblies 12 includes sliding bearings 20, seals 21. The housing 22 of the bearing assembly, which can rotate around an axis — a horizontal section 18 of the T-shaped bracket, is made in the form of a stepped cup, on which a portion of the pipes of the tubular frame 13 are fixedly mounted perpendicular to the horizontal section 18 of the T-shaped bracket, while through the holes 23, for example four, are made at the intersection of their axes on the horizontal section 18.

The operation of the submersible intake filter is as follows.

When you turn on the pump in the water supply system (not shown in the drawings), water from the water source enters through the filter elements 3 into the submersible water intake filter.

At the same time, to prevent the formation of an ice crust, a biologically inert anti-adhesive coating is provided that is harmless to the body.

Young fish cannot penetrate into the device through the filter elements 3, the sizes of the slots of which are taken less than the transverse dimensions of the fry.

After a certain time, various types of pollution accumulate on the outer surface of the filter elements 3. When the slots of the filter elements 3 are clogged, clean water is supplied to the vertical section 16 of the T-shaped bracket of the washing device, which is fixed coaxially inside the pipe 2 on the brackets 17, the temperature of which can be higher than the temperature of the liquid being cleaned, which then flows into the horizontal section 18, and then enters through the through holes 23 into the tubular frame 13 of the washing device, which begins to rotate, while creating a powerful stream of jets of liquid directed perpendicular to the surface of the fi trovaniya involving a mechanical particles and other impurities, and backwashing is performed.

Suspended particles of impurities are carried away by the flows of the washed liquid and, due to their inertia, fall into the fluid flow moving in the axial direction.

The proposed device has a simple design, which can significantly simplify the layout of the water intake unit, increase the efficiency of its cleaning from sludge and debris, and protect young fish from getting into the water intake and high efficiency of the working process based on the hydrodynamics of the moving stream.

Also, when operating a submersible intake filter, environmental safety is ensured.

Filters of this design can be used in a wide range of performance.

Claims (7)

1. Submersible water intake filter containing a cylindrical body, the axis of which is horizontally and parallel to the flow of the liquid being cleaned, which is a shell, filter elements, a washing device, characterized in that the filter elements are tubular with an outer filter surface, are slotted gratings made in the form of a cylindrical spiral from a high-precision profile of a V-shape, and fixedly mounted on both sides of the housing, the washing device is a yaet a T-shaped bracket mounted on it rotatably in bearing arrangements the two tubular frames, for the filtering elements arranged in parallel sections which are formed perforations. 2. Submersible water intake filter according to claim 1, characterized in that the T-shaped bracket is a distribution device designed to supply clean washing water, the temperature of which may be higher than the temperature of the liquid being cleaned, made of two perpendicular pipes, its vertical section fixed coaxially inside the pipe on the brackets, the horizontal section is located coaxially with the filter housing, and the ends of the horizontal section are fixed on racks located in the shell. 3. The submersible water intake filter according to claim 1, characterized in that the housing of each bearing assembly, which can rotate around an axis - a horizontal section of the T-shaped bracket, is made in the form of a stepped glass, on the generatrix of which sections of pipes of the tubular frame are fixedly mounted perpendicularly horizontal section of the T-shaped bracket, while at the intersection of their axes on the horizontal section through holes are made, for example four. 4. The submersible water intake filter according to claim 1, characterized in that the perforation is made in the form of two rows: one row of perforated holes is directed normal to the forming surface of the filter elements, the second row of perforated holes is angled with respect to the first row of holes and directed along the radius of the rotating circle to create a reactive force F, leading the washing device to rotate, and on one part of the frame the holes are located to the left of the axis of rotation, and on the other to the right. 5. Submersible intake filter according to claim 1, characterized in that the perforation is made in the form of one row of holes made at an angle α to the normal, and on one part of the frame the holes are located to the left of the axis of rotation, and on the other to the right. 6. The submersible water intake filter according to claim 1, characterized in that the V-shaped profile creates a rigid screen with longitudinal slots of a strictly defined size, which can be made with a size of Δ = 100-5000 μm with a tolerance of a gap width of up to ± 15 μm. 7. Submersible water intake filter according to claim 1, characterized in that the filter elements are made with a biologically inert anti-adhesive coating.

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