SU1585296A1 - Flotator - Google Patents

Abstract

The invention relates to the treatment of wastewater by the flotation method and can be used in devices in which the compaction of the sludge occurs by the flotation method, makes it possible to further compact and dry the sludge during its collection. The flotation cell contains a body, in the upper part of which there is a scraper conveyor consisting of inclined and additional blades fixed on endless chains. The inclined vanes are made in the form of a filtering element and fixed at an angle of less than 90 ° to the lower branches of the chains, forming with additional vanes of the trench. The gutters are fixed with the possibility of limited rotation around the horizontal axis. A pallet with a slope to the collecting tray is installed under the upper branches of the chains. When the scraper conveyor moves, the inclined blades cut the upper layer of the sludge slit, which moves into the trench cavity. When moving along the inclined filtering surface of the blade, the sludge dehydrates due to the filtration of free liquid from it and is further compacted by reducing the cross section of the trough. 1 hp f-ly, 3 ill.

Description

The invention relates to the purification of natural and waste waters by the flotation method.

The aim of the invention is to increase the efficiency of flotation collection. due to additional compaction and dehydration of the spam during its collection.

Fig. „1 shows the flotation cell, the general view; FIG. 2 is a section A-A in FIG. 1; in fig. 3 shows the node I in FIG. one.

The flotation machine includes a housing 1 with pipes for supplying 2 cleaned and removal of 3 purified water. In the upper part of the flotation cell there is a scraper conveyor 4, consisting of a

5 of them and 6 additional blades fixed on an endless chain 7. Nalon blades are made in the form of a rigid frame 8 with filter material 9 fixed on it (lavsan, nylon, chlorine, etc.). The shoulder blades 5 are fixed at an acute angle to the lower branches of the chains 7 and form grooves 10 with additional blades 6. The grooves 10 are fixed with the possibility of limited rotation around the horizontal axes 11, for this purpose there are latches 1 installed on the axes end plates and additional blades fixed restrictive plates

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13 to prevent leakage of psham during its removal and transportation. Under. the upper branches of the chains 7 is installed pallet 14 with a slope to the collecting tray 15, which is located parallel to the chain

The flotation machine works as follows,

The liquid to be cleaned, saturated with gas, is fed into the housing 1, where gas from the liquid rotating the suspended particles is separated from the liquid. In this case, a layer of psham is formed on the surface of the flotation cell. When the scraper conveyor 4 is moving, the inclined blades 5 cut the upper layer of sludge, which moves into the cavity of the chute 10 o. When moving along the inclined filtering surface of the blade 5, the spams dehydrate by filtering free liquid from it. The volume of the collected sludge is taken from the calculation of its placement in the cavity of the grooves 10 in one pass of the groove along the floater body. Wrung moisture from the sludge flows into the underlying more moist layers of aetama. Chutes 10, when moving with the lower branches of chains 7, stop the vehicle into the collection position with help of clips 12. When the chutes 10 move with the upper branches of chains 7, they turn around their horizontal axes 11 to the unloading position. Additionally compacted and partially dehydrated

The slurry flows into the pan 14 and flows down its inclined plane into the collecting tray 15 and is discharged from it for further processing. The purified water is discharged through line 3 to

technical targets or dumped into the sewer

The use of the proposed flotation device allows to increase the efficiency by additional compaction and dewatering of the sludge in the process of its volume from the surface of the flotation unit, which helps to reduce the moisture of the collected sludge, reduce the humidity of the sludge from 96 to 94% and increase the productivity of equipment by 25-30% with other things being equal, while reducing operating costs for processing the sludge and its disposal.

Claims (1)

1. A flotator, comprising a housing with pipelines for supplying purified purified water removal, a scraper conveyor with inclined and additional vanes fixed on an endless chain, a sludge collection tray located parallel to the chains, a pallet mounted under the upper branch of the chain with a slope to the tray that differs the fact that, in order to improve the efficiency of collecting flotation sludge due to additional compaction and sludge dewatering during its collection, the inclined blades are made of filter material and Attached to the additional blades at an angle of less than 90 °, while the inclined and additional blades are installed with the possibility of rotation around the horizontal axis. 2 ,, Flotator of At 1, about tl and h a-yu and with the fact that the blades are equipped with plates attached to their ends. -.-.:-.:;.%.(I k  .. ...; ..%. ": ../,.:.: - ;: vv / .rvr ..., .... ... I ....": - .-: .. ..: .:. .- .. .. . . - - " -e A-A 12 5 .: : l-l.ulu; -: L-: ;;.;. FIG. 2 Compiled by N. Ragozin Editor M. Bandura Tehred L. Serdyukova Proofreader A. About brocares . Order 2302 Circulation 802 VNIIPI State Committee for Inventions and Discoveries under the State Committee on Science and Technology of the USSR P3035, Moscow, Zh-35, 4/5 Raushsk nab. Production and Publishing Combine Patent, Uzhgorod street Yang 1 412 Phage.Z Subscription 101