DE1461090A1 - Pressure sifter - Google Patents

Description

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DR.-INB. . DIPL.-ING. M. SC. DIPL.-PHYS. DR. D1PL.-PHYS. HÖ6ER - LEGAL RIGHTS - GRIESSBACH- HAECKER PATENT LAWYERS IN STUTTGART

A 33 635 β
5o6o1964
fa - there

Complete new information

(input according to Article 7, Section 1, Paragraph 2, HrA at the Amendment Act]

Hermann Pinckh, Metalltuch- und Maschinenfabrik

Reutlingen

Pressure look a?

The invention relates to a pressure sifter with a cylindrical separator basket in circumferential _s centrically mounted to KLügelrotor for the sighting of PaserstoffSuspensionen ζ .ba in the paper industry.

after
The size / large printer whose classifier basket is made of sheet metal has become known. Both because of the geometrical dimensions and because of the material used, tolerances in the distance between the rotor blades and the inner surface of the classifier basket are possible

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not be held like that _? as would be desirable in the sense of equal * moderate cleaning * Depending on the distance between the two,

The invention also sets the task of _t a pressure sifter au achidHeUg the degree of purification is konaxa.n% and rela- »· tiy Irloine dimensions

This is achieved by the fact that a tube section which is finely machined on its inner surface and provided with Duroiibreohungen on its inner surface to ensure a cylindrical shape and the rotor blade surface that is attached to the cylinder is machined for parallelism and a predetermined area on the inner surface. _o is processed iat It hereby also possible to use a au bestehendea from sheet metal pipe section, which has been equipped with stiffeners and capable made using _{fine-machining;} .

Advantageously iat _P when the rotor blades have inclined to the rotor axis of rotation in the direction of rotation seen {) Itage the Flügelatirnflachen., But with such an inclination that they auo- to the suspension an upward .Förderwirkung

.. 3 ORIGINAL BATHROOM

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wherein _t practice dor RejektabfluB is provided at Sichteroberende. In this way, a conveying effect is achieved in the sense of the natural flow direction of the specifically lighter soil particles

It is useful if the rotor blades are facing the classifier basket, compared to the overpressure space of the classifier sealed longitudinal channel connected to a drain into the open atmosphere. Through this sioh results in every passage of a wing in the sieve basket recesses under the effect of the pressure gradient between Hing and the rest of the interior filled with suspension * room a backwash

It is beneficial if the sifter basket tube diameter corresponds approximately to the diameter of its co-operating pipe extractor, the sifter being connected directly without pipes with its open lower end coaxially to the open top of the pipe extractor _t eg flanged. This is another very important consequence of the reduced sifter dimensions. This means that the sifter and the pipe extractor can be combined into a single unit, which means that all of the armatures required since then;

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and regulators between the two components are omitted. The desired one Turbulence in the suspension is not lost due to the compact design

In the drawing, exemplary embodiments of the invention are shown therein;

Fig 1 a _o Axialachnitt by a combined tube centrifugal classifier;

fig. 2 shows a section along line 2 - 2 in FIG Pigο 3 a section along the line 3 - 3 in Figo 3; Pig. Figure 4 shows a section along the line 4-4 in Pig · 1j

Pig ο 5 an axial section through a classifier basket * below 'omission of the pipe extractor;

Pig 6 shows a section along the Lim ν 6 - δ in FIG. 5 =

A standing tubular. The tubular centrifuge housing 10 which expires in a cone 10a has at its upper end

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a tangential · leading-inlet Tutsen 10b whose inlet direction forms an acute angle _p relative to the radial plane of the housing and plague is inclined downwardly * connected to the upper edge of the housing 10 is a ring 11 which is arranged coaxially thereto _s whose outer diameter is larger and whose inside diameter is noticeably smaller than the pipe diameter. Connected to the inner edge of the ring is a pipe section 12 protruding into the centrifugal pipe housing, the lower edge of which lies below the confluence of the inlet connection 10b. The lower end of the housing 10 can be closed with a tap 13,

Jtest is connected to the ring 11 in a liquid-tight manner lower flange 15a of a tubular classifier jacket 15 a pressure sifter H, the geometric axis of which is coaxial to which the pipe slingshot is «just above the Plansch 15a a tangentially opening outlet connection 15c is formed on the jacket »the dumbbell is through a cover 16 at the top - Completed, to which a tangentially outgoing trigger nozzle 16b is integrally formed, to which a cock 18 is connected is ρ Bas lumen of the nozzle 16b opens into a helical one Depression 16o, the cross-sectional area of which increases towards the nozzle 16b o

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A stuffing box 17 was inserted into a central bore 16d , which was connected by a V-belt pulley 19.

20th
driftable V / elle / crossed vvird «. She is in . bearings 16e, which are integrally connected to the cover 16 via bearing ribs I6f ο At its lower free end the \ 7el-Ie 20 carries rotor blades 21 which can rotate within a classifier basket «. The Rotox'flügel 21 have such an angle of attack that they convey the suspension upwards ₉ when they rotate »This basket 22 is machined on its inside 22a for cylindricality and _{ground o} The rotor wing surfaces 21a facing the inner surface 22a are at a constant Abutanö to the inner surface 22a machined The classifier basket has openings 22b and is liquid-tight at its ends and held firmly in the flange 15a or in the cover 16 »

In the? Ig <3, 5 and illustrated Ausfüiirungsbeispiel 6116, the lid has a circumferential annular groove 116c to _f which flows into an outlet 116b ,. The Rocorflügel here consist of bulky channels 12I ₉ whose lower 33nde is abgeschloasea by a rim 121a and having an upper open end "protrudes into the groove 11 Φ addition, both the rotor blades are mitein by approximately semi-annular ring pieces 121b 121>

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other connected at their upper end, which is connected to the hills 121 can turn and partially immerse in the hat 116c « The ropes are dimensioned or arranged in such a way that the negative pressure prevailing in the connection 116b does not dissipate right to the pressurized rooms 130 or 131 Mt = divides, (but only via the hat 116c, the gutter 121 and the

momentarily these opposite openings 122 b a β Siohterkorbes 122 *

of the first execution example In operation / is through the nozzle 10b suspension under pressure introduced into the pipe centrifuge «] This liquid rotates in a downward spiral in the pipe slinger downwards »as indicated by dashed lines * In the cone TQa set off specific heavy flaws and can over the tap 15 should be drained «In the center of the pipe extractor the suspension freed from the hair dryer goes under Keeping the turbulence up again and passes through the tube 12 into the interior 50 of the seat 14 "Ropes are of a predetermined size at the perforations 22b retained «The remaining suspension ends up in the Room 51 and from there through the t5c to a reconstructed, not drawn machine »

- 8th

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The particles remaining on the inside 22a of the classifier basket are due to the promoting effect of the rotor surface 2ia transported to the recess 16c and from there Opening of the cock 18 in a siphon line (not shown) by the fact that the Botorflügelflache 21a from the inside 22a always has the same distance, the cleaning of the basket is always equally good at all points,

In the operation of the second embodiment a, the. Cleaning of the inner surface of the sifter basket is achieved by briefly reversing the direction of flow, which is actually directed from the inside to the outside in the basket, at those points opposite the channels 121. _o The positive reversal has the effect that particles ₉ that have settled in the sifter basket breakouts "(in, rewound; and are discharged via the! Tut 116c and nozzle 116b.

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Claims (1)

^no "f not csf '■'.'■.'! ■ · £ ■ '■" 5 * 6o 1964 fa - da - 9 ■ * Claim © s 1 / Pressure sifter with circulating in a cylindrical sifter basket centrically mounted conical rotor for the Sifting of pulp suspensions, e.g. in the paper industry, characterized in that the sifter basket is a finely machined to cylindricity on its inner surface s pipe section provided with perforations is provided and the wing surface facing the cylinder is on Parallelism and predetermined distance to the machined inner surface is processed? 2o- pressure sifter according to claim I _9, characterized in that the inner surface of the classifier basket is machined and / or "ground", 3ο pressure sifter according to claims 1 and 2 _9, characterized in that the rotor blades have a position of the paddle end faces inclined to the rotor axis of rotation (seen in the direction of rotation), • but with such a tendency that aie on the suspension exert a conveying effect upwards, the re * ject drain being provided at the top end of the sifter. 10 / ft R /. 7th A - * 3 635 e
5o 6a 1964
fa - da - 10 Pressure sifter according to one of the preceding claims, characterized in that the rotor blades are one of the Siehter basket facing, sealed against the overpressure space of the sifter and one in the open atmosphere have a longitudinal channel connected to the drain. 5ο Drueksioliter according to one of the preceding claims, characterized in that the rotor blades each as a TJ profile are formed 5, which is closed at the lower end while the open upper end in a sealing ring sitatp which in turn poetry in one as Arjfluss • serving ring channel penetrates » β ο pressure seal neoh one of the preceding claims. characterized in that _p be Sichterkorbrohrdurphmes "Ser etv / a the diameter of a suoammenarbeitenden with him corresponds Rohrfächleuder _f wherein the classifier directly connected without pipes with its open lower end coaxially to the EW cffane 'Obernoite Jlohrnchlmide'r s Soli: flanged is ο :,. ^^ ^v BADORJGINAL 809813/0647