DE66289C

DE66289C - filter

Info

Publication number: DE66289C
Application number: DE189166289D
Authority: DE
Original assignee: THE AUTOMATIC FILTER COMPANY in Washington, District Connecticut, West-Virginia, V. St. A
Priority date: 1891-07-07
Filing date: 1891-07-07
Publication date: 1892-12-27

Description

KAISERLICHESIMPERIAL

PATENTAMT.PATENT OFFICE.

KLASSE 85: Wasserleitung.CLASS 85: aqueduct.

Filter.Filter.

Vorliegende Erfindung betrifft eine Neuerung an Filtern und ein Verfahren zum Reinigen der Filterflächen von den Unreinigkeiten, welche aus dem Wasser abgeschieden und auf die Filterfla'che niedergeschlagen sind, und zwar erfolgt die Entfernung der Niederschläge mittelst eines festen Sandkörpers, welcher langsam die Filterflächen bestreicht und selbstthätig durch das Wasser in Bewegung erhalten wird.The present invention relates to an innovation in filters and a method for cleaning the filter surfaces of the impurities, which are separated from the water and on the filter surface are precipitated, namely the removal of the precipitates by means of a solid body of sand, which slowly and automatically sweeps the filter surfaces is kept in motion by the water.

Fig. ι zeigt eine schaubildliche Darstellung eines Doppelfilters.Fig. Ι shows a diagrammatic representation of a double filter.

Fig. 2 zeigt einen Längsschnitt durch denselben, Fig. 2 shows a longitudinal section through the same,

Fig. 3 zeigt einen Querschnitt in Richtung der Schnittlinie 2-2, Fig. 2.FIG. 3 shows a cross section in the direction of section line 2-2, FIG. 2.

Fig. 4 zeigt einen Horizontalschnitt in Richtung der Schnittlinie 4-4, Fig. 2.FIG. 4 shows a horizontal section in the direction of section line 4-4, FIG. 2.

Fig. 5 zeigt einen Längsschnitt einer Filterform , welche die Wirkungsweise veranschaulichen soll.Fig. 5 shows a longitudinal section of a filter shape, which illustrate the mode of operation target.

Fig. 6 zeigt eine abgeänderte Form eines Filters im Längsschnitt,Fig. 6 shows a modified form of a filter in longitudinal section,

Fig. 7 einen Vielröhrenfilter im Längsschnitt und7 shows a multi-tube filter in longitudinal section and

Fig. 8 einen Querschnitt durch denselben in Richtung der Schnittlinie 8-8, Fig. 7.8 shows a cross section through the same in the direction of section line 8-8, FIG. 7.

Man hat bisher versucht, Filterflächen dadurch zu reinigen, dafs man dieselben einem Wasserstrom aussetzte, der Sandtheilchen enthielt. Eine derartige selbstthätige Reinigung wirkt jedoch nur unvollkommen, weil die von einander getrennten Theilchen sich nicht mit genügender Kraft bewegen, um die schlammigen Niederschläge, die sich in dem Filter ansammeln, zu entfernen.Attempts have hitherto been made to clean filter surfaces by giving them the same Exposed to a stream of water containing particles of sand. Such an automatic cleaning but works only imperfectly, because the separated particles do not cooperate move enough force to remove the muddy precipitate that is in the filter accumulate, remove.

Der Hauptvortheil vorliegender Verbesserung besteht darin, dafs die Niederschläge von der Filterfläche mittelst eines festen (compacten) Sandkörpers entfernt werden, welcher sich langsam bewegt und eine kratzende Wirkung auf die Filterfläche ausübt, und um nun diesen Sandkörper in Bewegung und Berührung mit der Filterfläche zu erhalten, werden Sandtheilchen von dem Boden des Körpers entfernt, abwärts geführt und der Oberfläche des Sandkörpers wieder zugeführt.The main advantage of the present improvement is that the precipitates from the Filter surface can be removed by means of a solid (compact) sand body, which is moves slowly and has a scratchy effect on the filter surface, and now around it To keep bodies of sand moving and in contact with the filter surface become particles of sand removed from the bottom of the body, passed down and the surface of the sand body fed back.

Ein weiterer Vortheil des vorliegenden Filters besteht darin, dafs ein Innendruck geschaffen werden kann, der gröfser als der Aufsendruck ist, so dafs dieser Innendruck die Unreinigkeiten von der Filterfläche nach auswärts treibt, wo sie leicht durch den sich bewegenden Sandkörper abgekratzt werden können.Another advantage of the present filter is that it creates an internal pressure which is greater than the external pressure, so that this internal pressure removes the impurities drifts outward from the filter surface, where it easily passes through the moving sand body can be scratched off.

Die angegebenen Verbesserungen sind in den Ausführungen der beiliegenden Zeichnung enthalten. Fig. 5 zeigt die einfachste schematische Ausführungsform. Dieselbe besteht aus einem thönernen Filterrohr 3, das in einem Gehäuse A eingeschlossen ist; letzteres besitzt aufsen die Umlaufrohre 4, 5 und enthält den Sandkörper Y. Das Wasser wird durch das Einspritzrohr 6 eingeführt und erzeugt einen Strom in dem Rohr 4, so dafs Sandtheile von dem Boden des Sandkörpers Y in dem Rohr 4 nach der Oberseite des Sandkörpers Y getrieben werden.The specified improvements are contained in the explanations in the accompanying drawing. Fig. 5 shows the simplest schematic embodiment. The same consists of a clay filter tube 3 which is enclosed in a housing A; The latter has the circulation pipes 4, 5 on the outside and contains the sand body Y. The water is introduced through the injection pipe 6 and creates a flow in the pipe 4, so that pieces of sand from the bottom of the sand body Y in the pipe 4 to the top of the sand body Y. to be driven.

Claims

The filtered water goes through the sand layer into the filter tube 3 and can be a tap at the end of the tube 9 can be withdrawn from the latter.

A pump / serves to increase the internal pressure in the pipe 3 so that those Precipitates, which settle in the pores of the tube 3, are pressed outwards. This increased internal pressure comes into use while the sand body is moving along the pipe 3 and during the water flows into the apparatus through pipe 6 and drains off through pipe 8, see above that the impurities which have been scraped off the pipe 3 by means of the sand are carried away will.

In the filter of the more perfected construction Figs. 1 to 4 the water enters through the nozzle 18, is then directed downwards and swirls the sand up; This goes around the ring ι ο into the space below the latter, rises with the water through pipe 4 upwards and hits against the deflector plate 31, goes up through openings χ so that the sand particles fall on the sand body, while the Water enters the outlet pipe 16 through openings t. The sand body moves downwards and cleans the - filter surfaces. If the water in both filters follows the same path, the effect is the same in both filters. When the outlet openings are closed, water pressure in each filter drives the water through the cylinder 3, thereby removing the impurities.

Various means can be used to occasionally create an overpressure on the filter side of the filter material, so that the filtered water flows through the filter in interstices to remove the impurities which have settled in the small pores of the same and not from the scratchy one Sands alone can be removed to wash away. In the construction described, this is achieved by positioning the taps accordingly. If z. If, for example, it is assumed that the tap 20 is set so that the emerging water only passes through the channel jk ¹ ', there is only slight pressure on the outside of the filter on the left-hand side through which side the unfiltered water is free and in which the sand body is used to clean the filter surface. The pressure in the right filter is equal to that of the main amount of water that passes inward through the cylinder 3 into the space ν and from there through the channel g into the space ν behind the other filter surface on the left, so that during cleaning by means of the Sand on the left side of the filter, there is an outward flow of water through the filter.

These two filters always work together and remove from the filter material all the parts on the surface which cover the filter surface. If the filter on the right is to be cleaned, it is only necessary to turn the cock 20, that is to say thereby to open the channel y and to close the channel y ^1. If filtered water is to be drawn off, the tap 23 is opened in order to establish the connection between one or both filter chambers ν and the pipe 22.

Fig. 6 shows a single-pipe filter in which the tap 20 is closed when water is to be filtered. The water then goes through the nozzle 18 and the filter tube 3 into the chamber ν and exits through the tube g . If the filter is to be cleaned, the tap 20 must be opened. The water is then directed upwards through the nozzle 18 and downwards through the cap 19, whirls up the sand particles and guides them upwards until they abut against the cap 31, whereupon they fall onto the body of sand Y. The water and the impurities will then get through. that. Tube 16 continued. A funnel Q, which is provided with a tap, is used to introduce. Sand in the filter if necessary.

In the construction shown in FIGS. 7 and 8, six filter tubes are suspended from a hollow annular frame R. Each of these pipes communicates with this frame, and the filtered water flows out of the hollow space of the filter pipes through a pipe g . The sand lies around the filter tube group and is carried upwards by a stream which passes through the nozzle 18, then is directed downwards and the grains of sand which are taken from the sloping bottom of the housing. the; the chamber surrounding the nozzle is fed downwards. . The outlet pipe S, which is provided with taps, communicates with the inlet and outlet pipes.

Pat ε ν τ - A ν s ρ r υ c η: '

Filter in which the solid-walled filter cells are cleaned at the same time by increasing the internal water pressure and by the fact that the filter body is bedded in sand (Y) , which is sucked off by means of an ejector (18) at the bottom of the housing and fed back to the same at the top.

1 sheet of drawings.