SU1667897A1 - Device for cleaning sewage from large size impurities - Google Patents

Abstract

A device for the mechanical treatment of wastewater from large impurities belongs to the field of filtration and allows to increase the efficiency and reliability of the device. The device contains a grooved sieve mounted on frame 1, made in the form of a lattice from parallel grates, slip 3, toothed beam 4 and two cheeks 5. Grate bars are connected to skly 3 to toothed beam 4. A rotating cleaner consisting of a shaft 6, discs 7, brushes 8, scrapers 9 and toothed rack 10. A spring-loaded strip 12 is located above the toothed beam 4 for cleaning brushes, scrapers and the batten. Above the slide 3 is located the dispenser of the wastewater flow with a groove 16 along the generator. Above the distributor, a wastewater receiver 17 is installed with two nozzles 18 arranged at an angle to each other, with the ends of the flow distributor and the receiver interconnected. In the slide 3 and the distributor, on two sides, at the lattice cheeks, there are windows connected by troughs 21. 5 Il.

Description

The invention relates to the purification of waste water from coarse impurities and an IZHRT to be used in sewage treatment plants in public utilities and in various enterprises, for example, leather factories.

The purpose of the invention is to increase the efficiency and reliability of the device. Figure 1 shows a device for the mechanical treatment of wastewater from large impurities; figure 2 is the same, top view; in FIG. 3, view A in FIG. one; figure 4 - section bb in figure 1; figure 5 is a view In fig 1.

The device comprises a lattice-shaped sieve, mounted on frame 1, made in the form of a lattice, consisting of parallel grates 2 of rectangular section 3, a toothed beam 4 and two cheeks 5 (Figures 1 and 2). Grid-irons 2 are connected with skliz 3 with a gear beam 4 (FIG. 3). The distance between the grate depends on the size of the pieces of trapped impurities and is 4-8 mm. For a more reliable cleaning, two devices can be installed: the first is with a distance of 7–8 mm between the grate bars, the second is 4 mm. The lattice width depends on the amount of flow to be passed. Inside the grid, a rotating cleaner is located along its axis, consisting of shaft 6, disks 7, brushes 8, scrapers 9 and gear rack 10, Brushes 8 are located between scrapers 9 and gear rack 10. The rotating cleaner is attached to frame 1 and is driven by a drive 11 (figure 1). The teeth of the slats 10 are located so that when the cleaner is rotated, they fall into the corresponding grooves between the grate 2.

A spring-loaded strip 12 is located above the toothed beam 4, which cleans the brushes 8, the scrapers 9 and the toothed rack 10, preventing them from accumulating soils, ensuring reliable cleaning of the grate 2. Under the grate there is a tray 13 where the treated water passes, and from gutter - to the treatment plant, large mechanical impurities are discharged into the cassette 14.

Above the slide 3 lattice is located the distributor 15 of the wastewater stream in the form of a pipe (the cross section depends on the amount of wastewater supplied), with a groove 16 along its generatrix (figure 5). Above the sewage distributor 15 there is a sewage receiver 17, made in the form of a pipe of the same diameter as the sewage distributor 15, and provided with two nozzles 18, angled to each other at the center of the receiver. Each nozzle 18 ends with a connecting flange. The ends of the distributor 15 wastewater and receiver 17

the joints 19 are interconnected. In the distributor of the sewage flow 15 and in the slime 3, the windows 20 are made on both sides.

connected by two troughs 21. The sewage is supplied through one of the pipes 18. If the wastewater contains a large number of large mechanical particles (as in an ash factory of leather factories), then

0, water is supplied through the second nozzle 18, which dilutes these drains, which means that the ridge grooves are not clogged, eliminating the wedge 8, the scraper 9, the rack 10, and therefore the grid is cleaned.

The discs 7 have grooves 22 (FIG. 4) for providing the possibility of radial movement and installation in the optimum position of the brushes 8, the scrapers 9 and the gear

0 slats 10 when debugging the device and make adjustments when the bristles are worn in the brush; kah 8.

The sleaze 3 and the flow distributor 15 have a structurally common edge.

5 The device operates as follows.

Wastewater from the receiver 17 wastewater enters the distributor 15 wastewater, from both its ends towards each other

0 in two streams. But at the entrance, a part of the flow rushes along the grooves 21 onto the slide 3, partially reducing the pressure, and the rest of the flows, meeting in the center of the distributor 15, dampens the pressure and, evenly filling the distributor 15, rushes over the cheek (drain edge) on skly 3 at once along its entire length with loss of energy. The presence of the gutters 21 contributes to a good cleaning of the distributor 15.

0 According to slip 3, the flow falls on the grid. Water passes through the vapors between the grate 2 grids into the stream 13, and from there into the treatment plant. Large impurities are retained by the grate and removed by the brush 5, 8, scrapers 9, and the toothed rack 10 of the rotating cleaner. The scrapers 9 clean the grate 2 along their concave surface, the brushes 8 remove the pieces and clean the grease between the grate 2, the rack 10, the passage

0 with its teeth between the grate 2, constantly cleans the fat, does not allow clogging. The grate is easily rinsed with hot water, since its grooves are not clogged. Brushes 8, scrapers 9, gears 10-replaceable,

5 as they wear out.

The spring-loaded strip 12 cleans the impurities remaining on the brushes 8, the scrapers 9 and the rack 10 and drops them into the cassette 14. As the cassette 14 is filled, the other cassette 14 is replaced, and then the cycle repeats.

The grille and all metal parts of the cleaner are made of stainless steel.

The design of the proposed device ensures uniform distribution of trapped large impurities over the entire width of the grid, and therefore, the brushes 8, the scrapers 9 and the toothed rail 10 are uniformly loaded during operation, the wear of the brushes, the scrapers also occurs evenly throughout their length, and jamming is eliminated, which improves reliability and the efficiency of the device.

Claims (1)

The invention The device for mechanical treatment of waste water from coarse impurities, containing installed with the possibility of rotation no cleaner with discs and brushes, scrapers, toothed rack mounted on the discs with the possibility of radial movement, grooved sieve in the form of a lattice with parallel grate bars, cheeks, toothed beam, skli, flow distributor, spring-loaded bar and drive, deformed so that, in order to increase the efficiency and reliability of the device, it is equipped with a wastewater receiver installed above the flow distributor and having two nozzles arranged at an angle to each other along its center, and the ends of the flow distributor and the receiver are interconnected, and in the slide and the flow distributor on both sides of the cheeks there are windows connected by troughs. 12 U View A (turned around) / Fig.Z see nineteen EB & I -P fkii.it