DE1197570B - Filters for magnetic sludge and liquids containing solids - Google Patents

Description

FEDERAL REPUBLIC OF GERMANY

GERMAN

PATENT OFFICE

EDITORIAL

Int. Cl .:

ClOm

German class: 23 c -1/06

Number: 1197 570

File number: U 7405 VI a / 23 c

Filing date: August 24, 1960

Opening day: July 29, 1965

Filters for magnetic sludge and liquids containing solids are known per se. In particular filters are known that have a container and a magnetic filter, which consists of a A plurality of permanent horseshoe magnets arranged behind a filter plate and one in front of them Has guide plate, as well as located on endless chains, between the filter plate and guide plate guided scratches for discharging the filter material from the container and one in the gap between see filter plate and baffle plate opening discharge pipe is provided.

In detail, this last-mentioned filter is characterized in that the mouth of the exhaust pipe attached to the filter plate with the horseshoe magnets grouped around the muzzle are. This design of the known filter is disadvantageous because it means that in the course of the transport movement, which is exerted by the scratches on the filter material to remove these good parts from the filter carry out, get into the area of unlike poles on their way over the filter plate, so that a permanent re-magnetization and reorientation of the good parts during their way caused by the gap. This results in unfavorable flow conditions within of the gap, so that parts of the filter material are flushed into the area of the filter that clarified the Contains liquid. As a result, the filter effect of such filters is unsatisfactory.

The invention has the task of indicating how these disadvantages and difficulties can be eliminated and how the reorientation of the good parts on their way over the magnetic filter can be avoided.

The invention then relates to a filter for magnetic sludge and solids Liquids with a container and a magnetic filter from a plurality of behind a filter plate arranged horseshoe permanent magnets and one of these superposed guide plate as well as with on endless Chains located between the filter and guide plate scratches to discharge the filter material from the container and one in the gap between Flue pipe opening into the filter and guide plate.

According to the basic idea, the above object is achieved in that the horseshoe permanent magnets with their poles of the same name on parallel straight lines at a distance from one another are arranged and the straight lines with the direction of movement of the scratches along the filter and Guide plates match.

Filters for magnetic sludge and liquids containing solids

Applicant:

Belson Corporation, New York, N.Y. (V. St. A.)

Representative:

Dipl.-Phys. Dr. W. Andrejewski, patent attorney, Essen, Kettwiger Str. 36

Named as inventor:

Ahmad M. El-Hindi, New York, N.Y. (V. St. A.)

Claimed priority:

V. St. v. America dated August 27, 1959 (836 478)

In particular, the invention can be implemented in various ways. So the invention as expediently recognized to have the filter plate consist of a relatively non-magnetic material and the magnets are made of magnetizable terminal strips attached to the back of the filter plate Hold material. This results in a particularly favorable distribution of the magnetic field the magnetic filter. Finally, the flow conditions in the gap between the guide plate and the filter plate significantly improved if you place the mouth of the exhaust pipe on the upstream of the filter plate Guide plate attaches, instead of the known, to the filter plate. Then there is no longer the Danger that the flow on the filter plate is disturbed by the flue pipe.

The advantages achieved by the invention are primarily to be seen in the fact that a reorientation of the parts of the filter material, which are small permanent magnets as a result, can no longer take place on the way through the gap between the filter plate and the guide plate, so that the flow in this gap is disconcerted the reorientation of the small permanent magnets no longer takes place. As a result, a better separation of the filter material can be achieved, which leads to an increase in performance of up to 50%.

In the drawing, the invention is illustrated using an exemplary embodiment; it shows

509 628/351

Claims (3)

3 4 F i g. 1 a perspective, partially broken-away drive 48 is connected. In operation of the filter In a similar view of a filter according to the invention, the transport chains 33 and 34 become smaller Fig. 2 is a side view of the filter, speed, e.g. about 50 cm per minute, F i g. 3, a magnet device is driven clockwise along line 3-3, as shown in FIG. 2 in Fig. 2 in an enlarged view, 5 can be seen. A number of L-shaped scratching F i g. 4 shows a section along line 4-4 in FIG. 3 in siegen 50 is horizontal between these chains in the even larger scale and spaced apart and move F i g. 5 shows a similar section along the line 5-5 slowly downwards along the magnetic filter 14, in Fig. 3. along the bottom of the container and upwards As can be seen from Fig. 1 and 2, the io of the inclined wall 16 is continuous around the filter material Remove filter 10 from a rectangular housing 12 with that accumulated on these surfaces Sheet metal side walls. On the right was. This solid material gets through the scratches the wall consists of a magnetic filter 14, which is carried up above the liquid level, will be described in detail later. The left is a drying by draining the liquid End 16 of the container is to allow upwards and backwards 15, and then over a slope. The sludge to be filtered out and solids 52 at the rear of the filter in one not body-containing liquid is filled into the container shown container. To this bottling filled in from the left through a pouring tube 18, which facilitates and cleans the scraper bars itself, horizontally between the rear sloping wall is an auxiliary 16 above and behind the axis 44 associated side walls is and something * o scraper system 54 is arranged, which with each web below the normal liquid labeled 20 successively comes into contact and him keitsspiegel is arranged. The inlet pipe has cleans. on its underside a narrow slot 21, through Aus F i g. 2 it can be seen that the scraper bars 50 are filled with the liquid entering the system one that has accumulated on the filter device 14. Along the inlet pipe, intermediate sludge is scraped off, but not provided in the opening of the plates 22 and 24, which would create an outlet pipe 30 that is too strong The liquid entering prevents the magnetic field from being directed in such a way that when this material and a sliding surface inclined towards the bottom of the tank are scraped down, they do not form polarity for the heavier solids that are exposed to changes in the magnetic field. Strive to settle there immediately. This sludge is produced on the surface of the filter-size of the housing 12 so that a device can slide along, but adhere to this residence time of four or five minutes for and not to mix with the liquid.
Liquid between its entry and exit. The desired formation of the magnetic field exits the tank is intended to prevent the heavy, 35 being obtained from the fact that a large number of solids already deposited in the container are not exposed to strong permanent magnets 56 inside the filter. device, as can be seen from Fig. 3, arranged On the left side and just behind the magnetic filter 14, each of which is horseshoe-shaped, a guide plate 26 is arranged, which is brought to a narrow vertical gap 28 with the magnetic device 4 ° with the same poles on parallel straight lines the direction of movement of the device büdet The plate 26 has in the middle a scratch bars 50 on the surface of the magnetic filter 14 opening in which the mouth of an outlet pipe 30 coincide. As shown in FIG. 3, 4 and 5 through which the filtered liquid passes comprises the working surface of the device 14 from which container 12 is withdrawn. Before this on which the sludge is accumulated, a liquid is introduced into the mouth of the outlet pipe 30 and a filter plate 58 made of low carbon steel, which represents, it flows from the sides and from the bottom which is relatively non-magnetic. On the inside partition wall 26 through the narrow vertical of this plate 58 are pairs of thin vertical gaps 28, with practically all of the Polleiste60 and 62 made of magnetic steel, e.g. remaining fine magnetic solid by spot welding, which bodies against the surface of the magnetic filter 14 presses 50 magnetic bridges between the associated ones and collects them there. The vertical magnets 56 filtered in this way form, the strips of liquid then entering the outlet pipe 30 60 the south poles S and the strips 62 and the north and is bridged by a motor and pole N (see FIG. 2). The magnets 56 are circulated against the pump 32 to a point of use.These bars are held by magnetic pulling force, and from there returned to the inlet pipe 18, but at the distance from one another given by the wooden blocks and bars 64, around the liquid level within the container 66 and 68 and held by 12 at approximately the level of the mirror 20. a wooden back plate 70. This is supported by a The filter 10 is provided with a self-cleaning scraper rear and side metal walls 72 and device, which continuously enclosed the solid body 74,
and the 60 ..
Mud removed. This facility consists of patent claims:
a pair of endless, parallel transport chains 33, 1st filter for magnetic sludge and solids 34, which, as can be seen from FIG. container and a magnetic filter from a multi-level. The sprockets 36 are attached to an axle 44 arranged behind a filter plate, which in turn is driven on one side by horseshoe permanent magnets and one of these is driven forward by a large gear 46, inserted guide plate, as well as on endless chains with the latter via a belt drive with a located between the filter and guide plate Scratches led to the discharge of the filter material from the container and a discharge pipe opening into the gap between the filter plate and the guide plate, characterized in that the horseshoe permanent magnets (56) with their poles of the same name (N, S) are arranged on parallel straight lines at a distance from one another and the straight lines coincide with the direction of movement of the scrapers (50) along the filter and guide plates (26, 58). 2. Filter according to claim 1, characterized in that the filter plate (58) from a ratio moderately non-magnetic material and the magnets (56) along from on the back of the Filter plate (58) attached bridge strips (60, 62) held from magnetizable material are. 3. Filter according to claims 1 and 2, characterized in that the mouth of the exhaust pipe (30) is attached to the guide plate (26). Considered publications:
U.S. Patent No. 2,670,847. For this purpose 2 sheets of drawings