SU1569369A1 - Dirt-trapping device - Google Patents

Abstract

The invention relates to hydraulic engineering, in particular to devices that prevent the ingress of litter into water intake structures. The purpose of the invention is to increase reliability and simplify operation. During operation of the intake facility, the water passes through the openings between the grate plastics, leaving litter and sediment on them and on the latticed part of the sand trap. When, due to clogging, the difference in water levels on the grid is increased to the maximum allowable value, the automatic device activates a drive that drives the chains and buckets with the teeth by rotating the upper drive sprockets. The litter and sediment are bucket-toothed and move first along the inner and outer surfaces of the lattice part of the sand trap and guiding sectors, then along the grate and slope plates are then sent to the spring receptacle. The device shuts off automatically after restoring the original level difference on the grid. 2 Il.

Description

FIELD OF THE INVENTION The invention relates to hydraulic engineering, in particular, to devices that prevent the ingress of litter into water intake structures.

The aim of the invention is to increase reliability and simplify operation.

Figure 1 shows a trash device, a longitudinal section; figure 2 - section aa in figure 1.

The device is located in watercourse 1 and contains a frame 2, on which, from the side of the incoming flow, there is fixed a grill of longitudinal plates 3 and the frame 2 installed above the lattice. With its lower part, frame 2 is attached to sand trap 5, freely installed at the bottom 6 of watercourse 1. Along the frame 2 Endless chains 7 are mounted on upper leading 8 and lower leading 9 sprockets, which are driven by a drive 10. Drives 11 are attached to chains 7 with teeth 12, which are included in the openings between plate 3 and guiding sectors. 13, attached To the bottom of the plates 3 in their continuation, and the teeth 14, facing the sand catcher 5, which is located eccentric to the axis of the lower sprockets 9 and shifted in the direction of flow. The eccentric location of the sand trap 5 relative to the axis of the lower sprockets 9 ensures that the teeth 14 exit beyond the lattice (part 15 of the sand trap 5.

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In addition, the trash device is equipped with a hinge support 16 and the receiver 17.

The device works as follows.

When a water intake structure works, a certain water level difference is established on the grid, by which water passes between the grid plates 3, leaving 15 sand traps on them and 15 sand traps on the grid part 5 trash litter, for example, die-7 p {vegetation in the form of algae, woody debris etc., and in the sand trap 5 - soil sediments, such as sand. When, after a timeout of communication with clogging, the throughput (the capacity of the trash device is reduced and the difference in water levels increases to the maximum allowable value, an automatic device (not shown) containing, for example, a pressure relay or an ultrasonic level gauge and actuator, turns on the drive 10, which, by rotating the upper sprockets 8, drive 6 the movement of the chain 7, the buckets 11 and, in rotation, the lower asterisks 9, the litter and sediment, gripping teeth 12, 14 and the buckets 11, move upwards first along the inner the outer surfaces of the latticed portion 15 grit chambers 5 and are directed in soropriemnik 17. The apparatus is turned off automatically after a relay time of the initial reduction of the level difference.

When conducting technical maintenance during operation, the device is removed from the water by turning it to a horizontal position relative to the hinge support 16. Freely supporting the sand trap 5 at the bottom 6 of the waterway 1 simplifies the design, reduces material consumption and allows removing the device from the water for technical inspection during operation dismantling by turning it relative to the hinge support 16.

Fastening plates 3 lattice with .sklizom 1 and the location of the lattice

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The parts 15 and the sand traps 5 on the side of the incident flow protects the buckets 11 with the teeth 14 moving down from being wedged with debris and increases the reliability of the device.

The front lattice part 15 of the sand trap 5 is designed to prevent coarse litter (e.g., core d) from entering the cavity of the sand trap 5 and jamming the buckets 11.

Claims (1)

The guiding sectors 13 also help prevent the buckets 11 with the teeth 14 from entering the sand trap 5 when the buckets 11 enter and help the buckets 11 to push the solid non-destructive litter out of the sand trap 5 unhindered. Formula of the invention A de-holding device containing a frame placed across the water course with a grid of longitudinal plates mounted on the side of the incident flow and a scraping tile installed above the grid, a sand trap located under the grate and a device for cleaning the grid from debris and sand trap from sediments, including buckets with teeth facing the sand trap mounted on endless chains mounted on upper leading and lower driven sprockets, and a drive characterized in that, in order to increase its reliability and simplify oatsii, the lattice is provided with guide sectors attached to the bottom of the lattice plates in their continuation and located inside endless chains, and the buckets are provided with additional teeth facing inside endless chains, the frame being attached to the sand trap with the lower part to the semi-cylinder lattice with the front lattice part located eccentrically to the axis of the lower sprockets with a displacement in the direction of flow by the length of the bucket teeth facing the sand catcher, with tom sand trap installed at the bottom of the watercourse. 69C69SI  Aa .ft .JJtVfa These 3 F / 8.2 .ft