DE3406651A1 - Pulper - Google Patents

Abstract

In a pulper having a screen arranged at the base thereof and a rotor arranged coaxially thereto and having a connection piece for the discharge of highly soiled waste paper suspension, the inlet orifice of the connection piece in the pulper is made smaller by a cover screen. As a result, coarse pieces of soil can no longer pass into the connection piece so that its tendency to blockage is greatly reduced.

Description

S 4080 0.M. Voith GmbH

Password: "inlet panel" Heidenheim

Pulper

The invention relates to a pulper according to the preamble of claim 1. It has been proposed in these pulpers, heavily contaminated during pulper operation Pull off the suspension through a flue pipe located close to the floor and remove a considerable amount of dirt beforehand to sort out in order to prevent clogging of the sieve and the cleaning of the pulper container by draining over the Avoid heavy dirt sluice. Of course, this only makes sense if there is actually a large amount of dirt, especially coarse dirt, which can also be removed. There is therefore the task of significantly reducing the risk of the drain line clogging.

According to the invention, this object is achieved in a device of the type mentioned at the beginning by designing the same with the features of the characterizing part of claim 1.

It has also been found that in an arrangement according to claim 2, a significantly larger proportion of dirt through the connecting piece 6 can be discharged. Because this is not

protrudes too far into the container and is also covered at its mouth by the guide walls, will obviously hardly have one Disturbance of the flow in the pulper caused, so its mode of operation, i.e. in particular of its rotor, not is affected.

The invention is illustrated below with reference to two of the figures Exemplary embodiments are explained, with FIG. 1 being a vertical section through a pulper and FIG. 2 being a horizontal section represent by a pulper in another embodiment.

The pulper 1 has at its bottom a rotor 2, shown here with individual wings, which rotates above a sieve 3 arranged centrally in the bottom of the pulper. Below the sieve there is a draw-off space 4 for accepts. The radially outer part of the bottom 5 is inclined upwards. In the side wall 11 of the container there is the connection piece 6 for the suspension enriched with impurities, which is led into the interior of the container a little, namely about 4 and 10 % of the largest inner diameter of the container, but generally not more than 250 mm. The connection piece is located just above the inclined base part 5 and is partially covered at its mouth by a screen 8 and by inclined guide walls 7, 7 ', 7 ", etc. The screen 8 can have an outer diameter that is 20 to 35% larger than the pipe diameter The inside diameter of the diaphragm is chosen so that the inside diameter of the pipe at its mouth is reduced by 10 to 30% , thereby preventing larger pieces of dirt getting into the connecting piece 6 from clogging it.

In Figure 2, the connection piece 6 is in the oblique upward running bottom part 5 'arranged. It is shown that the parts of the connecting piece 6 running inside the container covering baffles 7, 7 ', 7 "in the area of the connecting piece 6 remote from the rotor 2 or sieve 3 is not provided need to be. The inclination of the baffles in relation to the wall of the container to which they are attached should be between 30 and 60 °, the connecting piece 6 itself being essentially perpendicular to the corresponding container wall, of course is guided by the same.

Heidenheim, 02/21/84
0025k / 0161k / Cg / Srö

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Claims (5)

Keyword: "Einlaßblende11 J.M. Voith GmbH Heidenheim patent claims 1. pulper with a sieve arranged at its bottom and approximately in its center and with a rotor arranged adjacent to it with a connecting piece for discharging heavily soiled waste paper suspension, characterized in that the mouth of the connecting piece (6) through a diaphragm (8) by 10 up to 30 % of the inner diameter of the connecting piece (6) is reduced. 2. pulper according to claim 1, characterized in that the outer diameter of the diaphragm (8) is greater than the outer diameter of the connecting piece (6), this being over a length which is between 2 'and 10% of the largest container diameter of the pulper (1), protrudes into this and that between the radially outer edge of the diaphragm (8) and the container wall (5 ·, 11) guide walls (7, 7 ', 7 "...) extend at an angle between 30 ° and 60 °, are arranged on the container wall (5 ', 11). 3. pulper according to claim 1 or 2, characterized in that the guide walls (7, 7 ', 7 "....) facing only on the rotor (2) Part of the panel (8) are provided. 4. pulper according to one of claims 1 to 3, characterized in that that the outer diameter of the diaphragm (8) 20 to 35% larger than that of the connecting piece (6). 5. pulper according to one of claims 1 to 4 with an outside of the sieve in the radially outward direction at least
Floor partially sloping upwards, characterized in that the connecting piece (6) is arranged just above the floor or in the inclined floor part (5). Heidenheim, 02/21/84
0025k / 0161k / Cg / Srö