DE1961277A1 - Drying centrifuge for continuous operation - Google Patents

Description

Operation.

The invention relates to drying centrifuges for continuous operation, which have a centrifuge basket rotating around a vertical axis, whose inner surface is covered τοη a sieve, over daa the material to be dried, which is at the bottom of the Basket is introduced, moved under the action of centrifugal force to the top of the basket, where the property passes over hand and in a first, the chamber surrounding the basket is collected. The Pltissig-

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speed, which is filtered when passing through the sieve is in a second, surrounding the basket and separated from the first by a cylindrical partition Chamber, collected.

to prevent that the lie with considerable force against Septum thrown and therefore splashing back liquid penetrates into the receiving chamber for the pesticides, Care must be taken that between the edge of the jarbe and the partition separating the two chambers there is a tight seal. A number of ways of solicitation have been proposed for this purpose, but they are not yet a completely satisfactory solution to the problem brought.

Ea is particularly known to be the top of the basket around to form an annular chamber, which consists of two there is solid transverse walls on the septum and in the Height of a frustoconical skirt attached to the basket are arranged. This training allows the air flow which conveys the atomized liquid into the solids receiving chamber. It was but found that due to the liquid pressure exerted on the septum caused by it

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is the Jfiüssigkeit let at high speed under the action of centrifugal force rom band of the skirt spun down is "a cheap rate of the liquid in the ringlörmige separation chamber penetrates and in which t e et st off -On receiving chamber passes because these ü ^ uid no longer in i the most liquid it s receiving chamber can flow back.

The foundation has set itself the task of the named To eliminate disadvantages in such a centrifuge, and on the one hand by this, α ate the in the ring-shaped door: ikanur.er The amount of penetrating irrisk is reduced and on the other hand, by a passage of the empty liquid in the solid waste water chamber is prevented.

This is achieved in accordance with the fact that the lower Transverse wall of the annular Koinner as a truncated cone with a star> -v> t "angled angle between its generators (at its tip} is formed, which is arranged at the level of the lower edge of the apron so that the of the Chute collected liquid on its inner surface and that between the outer edge aes is after below with a substantially vertical wall surface extending truncated cone and the Plüssigkeita-Aufn imitate chamber separating from the Jfe st st oif admission chamber Septum is provided with a liquid seal that

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Clay that is fed to the truncated cone on the liquid that hits it.

In this way, the skirt surrounds an annular chamber, which is separated from the liquid inlet chamber by a liquid seal and a liquid jacket, the latter being called from the liquid, which is thrown off the lower outer end of the apron. The anyway in the annular chamber through the Liquid penetrating through the gap between the lower edge of the apron and the inner edge of the truncated cone the air circulation flow caused by the skirt's circulation is directed to the periphery of this annular chamber, from where it drains to the liquid seal and through this seal returns to the Jr ltis β igJce its receiving chamber. The one penetrating into the annular separation chamber Liquid can therefore not get into the solids receiving chamber.

An embodiment of the invention is explained in more detail, for example with reference to the drawings, in which shows:

1 an echematic vertical section through a drying centrifuge designed according to the invention and - 5 -

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2 shows an enlarged section through the upper region of the tub.

The drying centrifuge illustrated in Figure I contains a fully-walled, truncated cone and upwardly widening centrifuge basket 10, which is perpendicular to one fastened in the tub 14 of the device Rotating pivot. The tub iab by a cylindrical Partition 16 into a liquid receiving chamber 18 and a pesticide receiving chamber 20 divided.

The inner surface of the basket 10 is covered with a sieve 22, which is separated from this surface by suitable spacers is kept at a certain distance so that the liquid passing through the sieve can flow to the upper end of the basket, where it can flow through holes or openings 24, which open out at the upper end of the basket ( forms are, can flow away.

At the top of the basket is a truncated cone full-walled apron 26, which extends downward, is attached. The apron has cylindrical ends at both ends Surfaces 34 and 36 (see. Fig. 2), the level of a on the partition 16 provided upper flange, or at the level of a deflector 38 are arranged. The distracting

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Part 38 consists of a very flat truncated cone, aer is extended downward with a cylindrical wall 40 which is attached to the partition wall 16 by means of spacers 41 while maintaining a small distance therefrom. The lower end of the cylindrical wall 40 is immersed in an annular chin attached to the partition wall 16.

The inwardly facing hands of the deflector 38 and the flange of the septum 16 are very close to the Cylinder surfaces 34 and ^ 6 arranged so that two annular Gaps 44 and 46 with a smaller gap width arise.

By forming the cylinder surfaces opposite the upper one Splash of the septum 16 and the deflector 38, the assembly of the device is facilitated because within the by the axial height of these cylindrical surfaces limits the gap widths between these parts of the skirt independently remain the same, which relative height the basket occupies to the tub.

The upper band of the deflector 38 is arranged higher than the lower edge of the skirt 26 and the lower edge of the deflector is substantially on the

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at the same altitude or at a slightly lower altitude than this edge of the apron.

iir. Operation flows through the light passing through the sieve, filtered liquid on the inner surface dee basket to su Deesen upper end, where the liquid passes through bores or openings 24 and then reaches the inner top hexes of the skirt 26, sound where it to the lower * end the apron flows. From this lower edge the liquid is thrown off under the action of centrifugal force in the form of a horizontal liquid niantel. This liquid liquid strikes the inner surface of the deflector and then flows down along the land 40 and into the channel 42, over whose hand it overflows and then enters the liquid receiving chamber 18.

The ring-shaped i'rennkamter t> 0, which from the septum Ib, the skirt 26 and the deflector 3b is limited

eoKit from the laamer 18 through the liquid sitantel 48 and separated by the liquid seal, which tone the land 4υ and the channel 42 is formed.

Although 4, eA of the liquid cantei τοη aem conical • tumpit-shaped deflection part and thus the dynamic pressure is reduced, with certain conditions

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Conditions relating to the liquid viscosity or the amount of liquid, the case that the liquid jacket 48 into the interior of the chamber 50 through the gap 46 entry. This portion of liquid in the chamber 50 is then by the circulating air flow that the circulation of the Apron 26 causes, led to the lower part of this chamber, where the liquid falls into the channel 42 and through the liquid seal passes through into the chamber 18. The liquid can therefore not penetrate into the chamber 20 The design according to the invention therefore creates a very good seal between the solids receiving chamber and the liquid receiving chamber.

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Claims (1)

5th December 1969 File: PGm 6773 Claims i.) Drying centrifuge for continuous operation with a centrifugal basket that widens conically upwards and revolves around a vertical axis, which in a through a ring-shaped, vertical partition into a liquid receiving chamber and a split tub for a pesticide receiving chamber is arranged and with a surrounding and attached to the upper end of the basket, full-walled trained apron, which together with the upper Kandbereich of the septum and one attached to it Transverse wall separating the liquid receiving chamber from the pesticide receiving chamber Forms annular chamber, characterized in that the transverse wall is designed as a flat truncated cone (38) which is arranged at the level of the lower edge of the apron (26) so that the collected by the apron Liquid on its inner surface. - II 109809/0221 meets and there between the upper edge of the truncated cone and the septum (16) has a liquid seal fed by the liquid impinging on the truncated cone (40, 42) is provided. oü.) Drying centrifuge according to claim 1, characterized in that that the outer edge of the truncated cone A (38) downwards with a vertical cylindrical Wall (40) extended, which is arranged at a small distance from the partition (16) and attached to this and that the lower end of this cylindrical wall is attached to a septum Groove (42) is immersed, which together with this lower end the J? lüs s igke its seal forms. 3.) drying centrifuge according to claim 1 or 2, characterized in that the inner edge of the Kegel ™ truncated (38) higher than the lower üand of the skirt (26; is arranged and that the outer edge of the truncated cone arranged at the level of this lower edge of the apron or at a slightly lower altitude is. 4.) drying centrifuge according to claim 1, 2 or 3, characterized in that the skirt (26) on - III 10980 9/02 21 each of its two ends a cylindrical surface (34; 36) whose axis coincides with the axis of the centrifugal cage and that the cylindrical surfaces at the height of the upper level of the partition (16 j resp. uee truncated cone (38) are arranged and that the Cylinders laugh with these annular columns ($ 44 46) form smaller width. Jr / ü 6 109809/0221 BATH