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Method and device for cleaning bottoms of pools with sand beds

A sand bed, cleaning machine technology, applied in cleaning methods and utensils, cleaning methods using gas flow, separation methods, etc.

Inactive Publication Date: 2002-08-07
WEDA POOLCLEANER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Each cleaning operation of this type takes about a month and requires the operation of three workers and an external press

Method used

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  • Method and device for cleaning bottoms of pools with sand beds
  • Method and device for cleaning bottoms of pools with sand beds
  • Method and device for cleaning bottoms of pools with sand beds

Examples

Experimental program
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Embodiment Construction

[0009] As shown in Figures 1 and 2, the chassis 1 is mounted on four pairs of double wheels 2, which are respectively surrounded by left and right crawlers 3 on each side of the cleaning machine. The track is driven by a fully enclosed worm gear motor 4, which is installed in the center of the rear of the chassis, through a short shaft protruding from both sides and equipped with a magnetic clutch, and drives each set of track by means of a sprocket 5 meshing with it. The front end of the cleaner is also provided with a common shaft with a magnetic clutch, which is connected to the sprocket 6 when the front is engaged with the track. The purpose of the magnetic clutch is to release or brake the track when cornering on the side the scrubber is going to turn towards. The front end of cleaning machine is provided with submerged pump 7, and submerged pump 7 is provided with suction nozzle 8, and the lower end of suction nozzle 8 widens outwards and extends to the whole width of cl...

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PUM

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Abstract

The invention relates to a method and an apparatus for cleaning the sand beds of slow sand filters, infiltration basins and pools of other types having sand beds in water treatment works and similar plants, while the filter is in service, by removing a few centimeters of the bed surface, cleaning the sand of the sludge or filter film formed on the bed surface, and discharging the separated sludge, or to a suitable disposal site. This is achieved using a tracked cleaning machine equipped with a submersible pump (7) and nozzle (8) to remove the top layer of sludge-bearing sand from the bed, cleaning the sludge from the sand thus removed in a hydrocyclone (13), returning the cleaned sand to the bed via a spreader plate (15) and discharging the water-suspended sludge to a drain or to a suitable disposal site through a hose (17).

Description

technical field [0001] The present invention relates to a method and to cleaning of the sand beds of slow sand filters, filter tanks, and other types of ponds with sand beds in water treatment plants and the like, and to apparatus for carrying out the method. Background technique [0002] When using previously known methods of cleaning a sand filter or filter tank of this type, the slow sand filter or tank is shut down and drained. A machine, such as a small loader, is then used to remove the top layer of sand and deliver it to a location suitable for cleaning. When the sand filter is refilled with water and then the sand bed is to be cleaned, the filtered water must be drained to the wasteland 2 to 3 weeks before the sand filter resumes normal operation due to the disturbance of microbial activity on the sand bed caused by the dry sand surface. Each cleaning operation of this type takes about a month and requires the operation of three workers and an external press. Sand ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D24/20B01D36/04
CPCB01D36/045B01D24/205B01D2201/265B01D24/4636B01D24/4678B01D24/4689
Inventor 安德斯·埃肯伯克克拉斯·郎厄
Owner WEDA POOLCLEANER
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