DE7423656U - Lower part for a filter device - Google Patents

Description

ä Patent Attorneys Liedl, Dr. Pontani, Möth, Zeitler

Munich 22, Steinsdorfstrasse 21-22, phone 089/29 84 62

P 6523

SCHLEICHER & SCHÜLL GmbH, 3352 EINBECK

Lower part for a filter device

Tue ;? The innovation relates to a lower part for a filter device, in particular for a suction stand in filter devices, with a filter receiving device, in particular for a sieve plate or frit, onto which an attachment in which the liquid to be filtered is placed can be placed.

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In filter devices, it is known to use lower parts on the one Attachment is placed in which the zti filtering liquid or in which the liquid to be filtered is poured. The filtering device is located between the lower rope and the attachment, in particular in the form of a sieve plate or a frit, on which a filter paper or other filter material may be placed is still being launched. The attachment and the lower part are held in place by means of pliers or another suitable holding device during the filtering process 2Xi hold tightly together. The lower part still has an outlet pipe which is connected to a suction pump via a suitable sealant, for example a rubber stopper. While After filtering, the liquid to be filtered is removed from the attachment sucked through the filter pack.

In many cases of use, the lower part is the one to be filtered Liquid-containing attachment via a suction stand with the suction device tied together. The suction stand has a suction tube into which several upper parts open, which are arranged in an upright position are provided along the suction pipe. In this recording upper parts are various lower parts with the attached Attachments inserted, a rubber stopper serving as a sealant. This arrangement is relatively complex and cumbersome to assemble.

The task of the innovation is therefore to make the essay, which contains the liquid to be extracted, with the suction device, in particular to connect via a suction stand.

In the case of the lower part of the type mentioned at the outset, this task is in terms of innovation solved in that the lower part is funnel-shaped and an annular support shoulder in the upper edge of the funnel shape is intended for the filter insert. which of a

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running edge is included.

This also enables the frit or the frit to be arranged in the correct position Sieve plate together with the filter paper and the Sealing ring guaranteed. Also when joining the parts is prevents the parts from slipping due to the circumferential edge.

The secure position, in particular the frit or the screen plate, can can also be increased in that an increase is provided approximately in the middle of the circumferential support surface of the support shoulder. Further the circumferential edge can have a height which is the height of the filter insert. To make it easier to put the attachment on, the outside of the peripheral edge can be chamfered.

Furthermore, it is of course also possible to use the attachment to be filtered Insert the liquid and the associated filtering device into the lower part by means of a sealing plug according to the innovation, namely in the funnel-shaped part of the same. This part can preferably be conical downwards to the opening which is in the suction tube leads to this run. Advantageously, several of these Lower parts are in a standing arrangement with the suction pipe of a suction stand in connection, so that while inserting the filter elements such as sieve plate, frit and the like in the peripheral edge, for example using a spring clip, several attachments with liquids to be filtered directly with the suction stand in Can be linked. Of course, as already mentioned, the attachments with the filtering devices and can also use rubber stoppers the lower parts are connected.

The advantages that are achieved due to the innovation lie especially in the fact that the assembly of the individual parts can be done quickly and without much effort. It is prevented during assembly

changes that the parts slip against each other, whereby a safe position is guaranteed in particular for the filter insert.

Ih the enclosed figures is a preferred version .sbfii.snif?] of the innovation. The innovation will be explained in more detail using these figures. Show it:

1 shows a longitudinal section through a lower part;

FIG. 2 shows, in an enlarged view, the detail Z in FIGS. 1 and

3 shows a suction stand with the lower parts.

The lower part 1 has a funnel-shaped part 12 and can, for example be brought into connection with a suction device. In the upper edge area, the Unterioil 1 has a support shoulder 2, in the support surface of which an elevation 3 is provided approximately in the middle. Furthermore, the support shoulder 2 is surrounded by a circumferential edge 4, which has about the height of the filter insert. After installation, the filter insert comes to rest in a space 6 that is surrounded by the Support shoulder 2 and the circumferential edge 4 is formed. The lower part 1 also has a bore 5 into which a cock can be plugged in. Furthermore, a circumferential projection 11 is provided.

The arrangement can, for example, be placed on a stand of a filtering device which is connected to a suction pump (FIG. 3). The liquid to be filtered located in the attachment (not shown) passes during the filtering through the filter insert, which is arranged in space 6 and through a further bore 5 in the lower part 1, for example into a collecting container (not shown).

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Due to the circumferential edge 4, a correctly positioned insertion of the Filter insert in the space 6 guaranteed, with the assembly of the lower part with the essay, a shift of the one located in room 6 Filter insert is avoided. The elevation 3 provides an improved seal and an improved hold of the filter insert, which is designed as a frit or sieve plate with m filter paper located on it, can be achieved. The circumferential edge 4 has. '^ M upper Part of its outer surface has a bevel 7, whereby the attachment of the essay is tert erleich.

In Fig. 3, a suction stand 8 is shown with several Subdivide 1 is stocked. These lower parts are designed as shown in FIGS. 1 and 2. The bottoms are with a ] common suction pipe 9 connected. This suction tube 9 can

For example, a suction pump can be connected to the point. The attachments in which the liquids to be filtered are located, for example by means of a spring clip, know directly on the lower parts 1. The spring clip engages around the circumferential edge 4. It also engages under the projection 11, which has a downwardly directed surface. This projection 11 projects over the funnel shape or over the funnel-shaped part 12 of the lower part. In order to close or open the outer part 1 with respect to the suction tube, only a single Ah lock 13 is required.

6523

7423158-5.Ä74

Claims (5)

Protection claims 1. Lower part for a filter device, in particular for a suction stand in filter devices, with a filter receptacle device, in particular for a sieve plate or frit, on which an attachment in which the liquid to be filtered is located, can be attached, thereby marked, that the lower part is funnel-shaped and in the upper edge area of the funnel shape an annular support shoulder (2) for the filter insert is provided, which is from a rotating Edge (4) is included. 2. Lower part according to claim 1, characterized in that the circumferential Edge (4) 3 has a height which corresponds to the height of the filter insert. 3. Lower part according to claim 1 or 2, characterized in that the outside of the circumferential edge (4) is chamfered. 4. Lower part according to one of claims 1 to 3, characterized in that that the funnel shape tapers conically downwards. 5. lower part rach one of the preceding claims, characterized in that that several of these sub-parts in a standing arrangement connected to a common tube of a suction stand known per se are. 7423856-5.12.74