SU1134215A1 - Device for removing sedimentation from horizontal settling tanks - Google Patents

Abstract

A DEVICE FOR CLEANING HORIZONTALNE SINTERS FROM SEDIMENT, containing scrapers, a pump with a full tubing, characterized in that, in order to simplify the device and increase its reliability, it is equipped with a horizontal frame installed with a possibility to move along the bottom of the sump with vertical rack systems. mounted on racks with the possibility of vertical movement, with this pump installed in the tank, and the suction pipe and scrapers are fixed to the frame.

Description

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Approach 11 The invention relates to a water treatment technique, namely, devices for removing sediment, and can be used to clean natural sewage in horizontal sedimentation tanks. A device for cleaning a horizontal sedimentation tank containing scrapers attached to a trolley, a winch and monorails is known. it is scraped by scrapers, which are moved by a trolley moving by means of a winch along the settling tank along the monorails located on both its sides. However, to remove the sediment collected by scrapers from the bottom of the bottom a, a pumping station is needed, usually located under a settling tank in a separate room, which increases the cost of the device and reduces its reliability. The closest to the invention to the technical essence and the achieved result is a device for removing sediment from sedimentation tanks, containing a platform with a transfer mechanism, a suction pipe, a collecting channel, a pump of adjustable capacity and a scraper for collecting sludge into a longitudinal channel located at the base of the settling basin . The platform moves reciprocally along support structures located on the walls of the settler and moves the scraper and siphon. The latter sucks up the sediment collected by the scraper from the longitudinal channel and pumps it into the collecting channel located along the settler, from where the sediment is pumped out with a pump of adjustable capacity, since for operation of the siphon the level in the collecting channel must be maintained below the liquid level in the sump J2j. The disadvantages of the known device are significant capital costs for the construction of precast and longitudinal channels and a platform with specific structures on the walls along the settling tanks, practically reaching a length of 120 m and more, and for permanently working backfills, they also require the construction of these structures, and for the operation of the siphon-controlled pump system, complex apparatus are required to control the pump capacity depending on the level of 2 liquids per second. Orn channel that complicates operation of the device is N, and reducing a reliability of the whole process. The purpose of the invention is to simplify the device and increase its reliability. This goal is achieved by having a device for cleaning horizontal sedimentation tanks from sludge containing scrapers, a pump with a suction pipe, equipped with a horizontal frame mounted with the possibility of moving along the bottom of the settling tank with vertical supports and a reservoir installed with the possibility of vertical displacement; in the tank, and the suction pipe and scrapers are fixed to the frame. With such a constructive solution of the device, the pump moved through the sump sucks up through the slit nozzles, and the pipeline scoops up sediment with scrapers and pumps it out of the sump, while installing the pump in the tank below the liquid level in the sump creates a constant backwater in the suction line, which greatly simplifies its operation eliminating the need to fill it for start-up and the installation of an inaccessible suction valve. Thus, a platform, a siphore, a collecting channel, a pump of adjustable capacity and a longitudinal channel are excluded from the known sludge removal device, and the number of operating links is minimized. FIG. 1 shows a device with partial blasts of the walls of the tank and the frame to better show the structure; in fig. 2 is a view A of FIG. 1J in FIG. 3 - scheme of operation of the device in the sump. A device for cleaning horizontal settling tanks from sediment includes frame 1 consisting of runners interconnected, covered from above by sheet 2 welded to them, to which scrapers 3 are welded to the bottom, and ballast weight 4 and welded to top 6 are welded. Depending on the depth of the settling tank at a given height, the openings on top of the tank 7, in which the pump 8, the discharge pipe 9 and the valve 10 are mounted, are attached to the racks 6. The suction pipe 11 is attached on one side to the suction pipe 5, and on the other to tank 7 which has

rack 6 removable cover 12. To move the device around. the bottom of the sump to the frame 1 is fixed to the cable 13.

The fully mounted device 14 is lowered into the sump 15, behind the walls of which a low-speed winch 16, a system of blocks 17 and 18 and a tail block 19 are installed. The flexible pressure hose 21 attached to the floats 20 and the cable 22 are connected to the discharge pipe 23 and the starter 24 and through the reservoir JC with a pump 8. A drain and a diverting unit (not shown) are used to evacuate the device 14 from the sump for repair or inspection.

The device 14, reciprocating in the sump, can also be moved in the transverse direction by moving the tail block 19, which should be located on the water supply side in the sump, where the largest amount of sediment settles. Since the drain box of the sump is constantly open at the given elevations, the water level may vary slightly, so the tank 7, protruded 20-30 cm above the water hole, cannot be flooded.

The device 14, moving with the pump 8 on through the sump through the slotted suction nozzle 5 and

the pipe 11 sucks the sediment collected by the scrapers 3 and pumps it into the discharge pipe 23 through the sleeve 21, which, after the device, moves along the sump fixed to the floats 20. The sediment thus removed from the sump is recycled or recycled.

The device may turn on intermittently or operate continuously, while the processes of sedimentation and removal of sediment from the settling tank are carried out simultaneously.

The use of the invention will reduce by approximately 50% the capital costs of cleaning the settling tank as compared with the basic device, for the settling tanks that are cleaned periodically, for example by stopping, removing water, drying and subsequent excavation of the sludge, will allow the implementation of continuous operation. cleaning, thereby improving the quality of the water to be purified and the conditions of operation of the settling tanks. The installation of the pump in a tank with an overpressure in the suction line allows the device to be put into operation without prior ivki pump and install hard-suction valve, which increases the reliability -essential and purification process. operating conditions of the device.

1134215

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FIG. 2

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Claims (1)

DEVICE FOR CLEANING HORIZONTAL SEDILERS FROM SEDIMENT, containing scrapers, a pump with a suction pipe, characterized in that, in order to simplify the device and increase its reliability, it is equipped with a horizontal frame with vertical racks and a tank mounted on racks installed to move along the base of the sump with the possibility of vertical movement, when this pump is installed in the tank, and the suction pipe and scrapers are fixed on the frame. > 1 1134 215 2