Cleaning and liquid contact with solids – Apparatus – For work having hollows or passages
Patent
1995-08-16
1997-03-25
Stinson, Frankie L.
Cleaning and liquid contact with solids
Apparatus
For work having hollows or passages
134172, 134166R, 13762515, 13762511, 239 66, B08B 900
Patent
active
056135114
DESCRIPTION:
BRIEF SUMMARY
FIELD OF THE INVENTION
The present invention relates to a distribution valve for a high-pressure pump, especially for sequential distribution of a pressure medium to several different outlets successively, from one and the same pump. More specifically, the invention relates to a valve of the type recited in the preamble of appended claim 1. The invention also relates to a device for washing the interior of a building, especially a stable.
DESCRIPTION OF THE PRIOR ART
The pump here concerned may be e.g. a conventional high-pressure cleaner, and the pumping medium may be clean water or water admixed with a cleaning agent and/or a disinfectant for automatic cleaning of the interior of a stable. According to the prior art, the liquid is distributed through a number of nozzles connected to the high-pressure cleaner, and the nozzles are caused to operate alternately after one another. In this manner, it is possible to treat a very large area in one and the same operation by using a cleaning robot adapted to the size and shape of the building and equipped with a distribution valve and a single high-pressure cleaner. The nozzles are mounted on a drivable stand, which is slowly moved in the longitudinal direction through the building from one end to the other while the nozzles are successively cleaning and disinfecting the walls and the ceiling.
All the nozzles being not in operation simultaneously depends on the limited capacity of the high-pressure cleaner. The high-pressure cleaner (if of conventional design and size) is only able to operate with one nozzle at a time, possibly two nozzles under certain conditions. If several nozzles are used with the high-pressure cleaner, the pressure will drop and the dynamic cleaning effect fail.
On account of the relatively high pressure used (16-18 MPa), distribution valves of conventional type, for instance solenoid valves and sequential valves, are not suitable. Among other things, the known valves are not sufficiently pressure-sustaining, and a pressure rise is produced in the system during the nozzle-switching operation. The demands to be placed on the distribution valve in terms of operation are as follows: a simple, wear-resistant and robust design, leak proofness at high operating pressures and gentle retroaction on the high-pressure cleaner during the switching operation of the valve. Moreover, the valve should be corrosion- and chemical-resistant.
SUMMARY OF THE INVENTION
The object of the present invention is to provide a distribution valve and a device for washing the interior of a building that remove the above-mentioned drawbacks and meet the above-mentioned criteria.
According to the invention, this object is achieved by means of a distribution valve having the features recited in appended claim 1, and a device having the features recited in appended claim 8. Preferred embodiments are recited in the appended subclaims.
The distribution valve according to the invention is of a type comprising a closed valve housing, in which a valve rotor is rotatably mounted. The valve rotor is adapted during rotation, preferably indexing, to alternately open and close the flow path to a series of outlet ports in the valve housing, the pumping medium being distributed through the ports concerned out to the respective nozzles in a programmable sequence.
The blocking plungers mounted in the valve rotor on a level with the bores in the valve housing are maintained pressed against the wall of the distributing chamber by the liquid pressure acting behind the plungers, and preferably also by a spring, such that the surfaces of the plungers engaging the wall of the distributing chamber efficiently and sealingly block the bores in the distributing chamber when the blocking plungers are in a position opposite thereto. The bore (or bores) in the rotor that is not provided with a blocking plunger leads the pumping medium out through the port with which it is in registry, i.e. the associated nozzle is activated. The other nozzles are inoperative.
When the distribution valve after a
REFERENCES:
patent: 825370 (1906-07-01), Zurbuch
patent: 1205031 (1916-11-01), Schmitt
patent: 1960515 (1934-05-01), Shield
patent: 2206361 (1940-07-01), Mackay
patent: 2720244 (1955-10-01), Isreeli et al.
patent: 3023778 (1962-03-01), Hayes et al.
patent: 3195585 (1965-07-01), Fechheimer
patent: 3534711 (1970-10-01), Brunner
patent: 3713462 (1973-01-01), Bushee
patent: 3995494 (1976-12-01), Muller et al.
patent: 4191330 (1980-03-01), Sample
patent: 4604093 (1986-08-01), Brown et al.
patent: 4684040 (1987-08-01), Jonovic et al.
patent: 4805648 (1989-02-01), Hour
Andersen Kurt E.
Madsen Ole
Stinson Frankie L.
Verntofta AB
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