DE1949641A1 - Push floor with lockable passage for pusher centrifuges - Google Patents

Description

Dr. F. Zumstein Sr. - Dr. E. Assmann 1949641 Dr. R. Koenlgsberger - Dipl.-Phys. R. Holzbauer - Dr. F. Zumstein jun.

PATENT LAWYERS

TELEPHONE: COLLECTIVE NO. 82 5341

TELEGRAMS: ZUMPAT

- CHECK ACCOUNT: MÖNCHEN 91139

BANK ACCOUNT:
BANK H. HOUSES

8 MUNICH 2,

1 / between

Motorenfabriek Thomassen 1T.V., DE STEEG / HOLLAND and

Eberhard B u b a η, MUNICH

Push floor with lockable passage for pusher centrifuges

There are known pusher centrifuges with axially displaceable, rotating ejector devices which allow liquids to pass through or overflow during the separation process and at the same time determine their level in the drum.

Y / ird this level of the steadily growing stratum of the When sedimenting solids are reached, they begin to enrich the liquid outlet and the sedimentation process is ended when a predetermined enrichment is reached. When the solids are expelled, this level will be reached far exceeded because the solids in front of the ejector pile up.

As a result, some of the solids pass through the ejection device and so gets into the liquid outlet for the purified water and clogs it.

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According to the invention, this disadvantage is provided by lockable Openings in the ejector reached. The openings are closed by covers in different Manner can be trained and operated o

According to a preferred embodiment, the opening essentially ring-shaped, this opening expediently through the thrust ring of the ejector and is limited by their push floor.

The thrust ring can be designed as a valve seat, in which case the thrust base is expediently designed as a valve body ». This valve body can be provided with a sealing lining or, if so desired, a shock-absorbing lining obtain.

According to a particularly useful embodiment of the invention This valve body consists of segments that are light are interchangeable so that in case of damage or wear the working capacity of the pusher centrifuge can be restored in a short time «

The extension device is particularly simple when the cover device of the opening is axially displaceable.

For example, Ausungsformeη of the invention are in the following explained with reference to the accompanying drawing, in which

Pig. 1 shows an ejection device on the left with a closed opening and on the right with an open opening

Fig. 2 shows another embodiment in which the cover the opening takes place through the sliding floor.

Fig. 3 illustrates a valve-like formation of the opening and covering the opening is ₀

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In general, in the drawings in the left section, the extension device is drawn in the extension position, while the operating position in which the sludge is thrown is shown on the right.

In the right-hand section of FIG. 1, at the end of the drum 1 there is a push floor 2 with a passage 3 "which can be closed by a closure member 4". The clarified liquid 6 flows over the outer edge 5 of the passage 3 and thus determines the liquid level in the drum.

During the feeding of the liquid to be clarified, the level of the sediments 7 increases continuously until they reach the Reach outer edge 5 of the passage 3 and then with the clarified Liquid 6 is flushed out. This ends the sedimentation process and the solid matter begins to be expelled in a known manner, by applying a thrust force to the push floor 2.

At the same time, the closure member 4 closes the passage 3 to allow the solids 7 to pass through and thus their deposition to prevent in the liquid outlet 16. In the left-hand section of FIG. 1, the push floor 2 has left the drum end 1 and pushes the solids 7 to a drum outlet.

Some of the solids 7 are stacked on top of each other at an angle of slope 8 and also cover the Zone of the passage 3 closed by the closure member 4 until the push floor 2 has reached the drum outlet.

If all the solids have left the drum, a thrust force that acts on the moving floor 2 in a known manner leads to this again in the opposite direction into the end of the drum 1.

Before the beginning, during the return, or afterwards, the closure member 4 opens the passage 3, as in the right-hand section evident. 109815/0088

In the right-hand section of FIG. 2, at the end of the drum 1 there is a push floor 9 which, together with a push ring 10, forms an annular passage 11.

The clarified liquid 6 flows over the inner edge 12 of the thrust ring 10 and thus determines the liquid level in the drum.

During the feed, the level of the sedimented solids 7 increases continuously until they reach the inner edge and then flushed out with the clarified liquid 6.

This ends the sedimentation process and the pushing-out begins when a pushing force acts on the pushing floor 9 » in a known way.

Has the push floor 9 reached the push ring 10, so is the annular passage 11 completely closed to the passage of the solids 7 and their deposition in the liquid outlet to prevent.

In the left section of FIG. 2, the push floor 9 has taken the push ring 10 with it and pushes a practically closed ring with it Forming a unit, the solids 7 to a known drum outlet.

Some of the solids 7 are deposited on top of one another at an angle of repose 8 and thus also cover the Zone of the annular passage 11 of the right-hand section, which is closed by the sliding floor 9, until the sliding floor 9 has reached the known drum exit.

If all the solids 7 have left the drum, then sets in a known manner a thrust force the push floor 9 in the direction Drum end 1 in motion, first opens the annular passage 11 completely and then takes over the stop 13, the Thrust ring 10 with up into the drum end o 1, as in the right-hand section recognizable ,, 'BAD ORIGINAL

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· _ ■ 5 -

The function of the device according to FIG. 3 is the same like that of Fig. 2. The thrust piston was used as .Ventilkörper 14 formed, which opens and closes the thrust ring designed as a valve seat 15.

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Claims (9)

Claims Ejection device for a pusher centrifuge, marked through at least one closable opening (3, 16) < 2. Ejection device according to claim 1, characterized in that the opening is substantially annular. 3. Ejection device according to claim 1 and 2, characterized characterized in that the annular opening (16) is limited by a thrust ring (10) and a sliding floor (9). 4. Ejection device according to claim 3, characterized in that the thrust ring is designed as a valve seat (15), which is closed by the push floor designed as a valve body (14). 5. ejector device according to claim 4 _f, characterized in that the sealing surface of the valve body (14) consists of easily exchangeable segments. 6. ejection device according to claim 1 to 4t, characterized in that that the part (4, 14) closing the opening is mounted so as to be axially displaceable. ' 7. outfeed device according to claim 6, characterized in that the pusher plate (9) is connected to the thrust or pulling element and only after introduction of the pushing movement on 109815/0088 Thrust ring (10) engages and takes it along when the annular Passage (11) is completely closed or open. 8. Ejection device according to claim 4, characterized in that the valve body (14) has a on its sealing surface sealing covering receives. 9. Ejection device according to claim 4, characterized in that the valve body (14) on its sealing surface receives a shock-absorbing coating. 109815/0088 Blank page