Cleaning and liquid contact with solids – Processes – Including application of electrical radiant or wave energy...
Patent
1998-10-08
2000-10-24
El-Arini, Zeinab
Cleaning and liquid contact with solids
Processes
Including application of electrical radiant or wave energy...
134 7, 134 10, 134 21, 134 36, 134 37, 15346, 15353, A47L 516, A47L 1120, B08B 312, B08B 504
Patent
active
06135127&
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The invention relates to a process for treating (particularly cleaning), maintaining and/or polishing flat horizontal and/or vertical surfaces, such as floors and walls, wherein a volume flow of air with or without solid particles is continuously directed with negative pressure onto the surface to be cleaned, is then aspired, subsequently cleaned and lead in a closed cycle to the treatment location, whereby the solid particles are optionally superficially wetted with a liquid treatment agent, then separated from the air, separately cleaned, wetted again with the cleaning agent and fed into the volume flow.
The invention relates also to a machine for implementing the process with a mobile stand, on which a container for receiving the solid particles, a flow generator with a pressure line for the production of an air flow, a suction unit, whose suction line for the aspiration of the volume flow from the surface to be cleaned are arranged, whereby the pressure line and the suction line are connected with a floor treatment element.
The invention relates further to a process for treating (especially cleaning), maintaining and/or polishing of flat horizontal and/or vertical surfaces, such as floors and walls, whereby a volume flow of air with or without solid particles is continuously directed onto the surface to be treated, is then aspired, subsequently cleaned and lead in a closed cycle to the treatment location, whereby the solid particles are optionally superficially wetted with a liquid treatment agent, then separated from the air, again wetted with the treatment agent and reintroduced into the volume flow.
Consequently the invention relates also to a machine for implementing this process with a mobile stand, on which a container for receiving the solid particles, a fan producing negative pressure with a pressure line for the production of an air flow, a suction unit, whose suction line for the aspiration of the volume flow from the surface to be cleaned are arranged, whereby the pressure line and the suction line are connected with a floor treatment element.
In addition the invention relates to a washing and separating device for performing the cleaning and separation of air and solid particles.
BACKGROUND OF THE INVENTION
A generic method for cleaning floor coverings such as carpets and the like is known from DE-AS 1 503 864. In this method a carrier to which a liquid, chemically active cleaning agent has been applied is moved on the floor covering by mechanical force. As carrier serve solid bodies in the form of carrier particles of rubber, plastic material or the like, wetted with liquid cleaning agents, which are continuously directed in a stream to the floor covering to be cleaned, are there mechanically rubbed into the floor covering and then aspired (sucked up) and redirected in a cycle to the starting point. The carrier particles covered with dirt are then cleaned and again wetted with the liquid cleaning agent. A container is provided for the carrier particles which has opening with an adjustable cross section leading to a roller brush. In the direction of its advance, this known machine has behind the roller brush at least one suction line for the extraction of the carrier particles, which is connected with the container via a suction line, a fan and a pressure line.
Although this known system uses solid particles wetted with cleaning fluid in a cycle with an integrated cleaning device, the release of the dirt is still achieved only by mechanical friction of the solid particles on the floor to be cleaned by using a roller brush, so that the machine is heavy and hard to handle. The many machine parts result in high maintenance cost.
The cleaning device consists of two containers arranged one on top of the other, one of them being provided with a rotating screening chamber filled with cleaning fluid, or solvent. After the contaminated solid particles have been fed into the screening chamber filled with cleaning fluid, the cleaning of the solid particles takes place. After
REFERENCES:
patent: 5388304 (1995-02-01), Takada
Dubno Herbert
El-Arini Zeinab
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