DE2732207A1 - Vertical screw mixer which can be easily cleaned - has cylindrical or conical mixing screw surrounded by at least two=part sheath, both components being mounted on inclined slide rails - Google Patents

Abstract

Vertical screw mixer has cylindrical or conical mixing screw surrounded by a sheath which is divided along its axis into a number of sections. These are mounted on inclined slide rails, inclination being towards the centre. An upper and lower support is provided. In the region of the upper support, an actuating mechanism from outside the vessel is linked to the sheath sections, this being from power cylinders mounted on the vessel lid with links via actuating levers. Openings are provided on the vessel lid to allow access for cleaning the screw and inside the vessel. The arrangement allows the sheath to be completely removed from the screw so that both sheat sections and the screw can be easily cleaned.

Description

Standing screw mixer

The invention relates to an upright screw mixer with a cylindrical or also a conical mixing screw and an axially divided jacket tube surrounding it.

In the known screw mixers of this type, the two jacket tube halves are hinged together and one half pivotable, so that when open Pipe a manual cleaning of the pipe interior and the screw is possible. However, since the one half of the pipe remains in place, is the cleaning of this part of the Pipe and the snail difficult.

The object of the invention is to eliminate these disadvantages and a Cleaning of the tube and screw with the help of an insertable device that can be operated from the outside Tools to enable.

This is achieved according to the invention in that the jacket pipe parts are mounted on Slide rails are arranged. The slide rails can to the snail arranged sloping down and there can be an upper and a lower rail guide be provided.

Appropriately, grip the casing pipe parts in the area of the upper rail guide Pulling organs. The tension members are advantageously connected to power cylinders. To the preferred embodiment of the innovation are the power cylinders in the lid of the Mixing container arranged in pivot positions.

It is also proposed that openings in the lid of the mixing container for introducing cleaning devices, especially for the auger and the inner surface edges Jacket pipe parts are provided.

The invention also relates to the lower bearing for the screw of the Screw mixer, which is designed as a track journal bearing, the screw shaft the bearing bush carries and the bearing journal is arranged on the housing bottom of the mixer is. The bearing journal on the housing base can expediently be detached from the outside. Furthermore can the bearing bush is accessible and exchangeable from the outside after removing the bearing journal be. It is also proposed that the bearing pin have a continuous, central one and an additional bore opening in the area of the lower sliding surface limit having.

The invention is explained in more detail with reference to the drawings.

It shows: FIG. 1 a screw mixer in vertical axial section FIG. 2 shows a lower bearing for the screw of a screw mixer according to FIG. 1.

In the mixing container 1 of the screw mixer is a central, vertical, arranged cylindrical mixing screw 2 and from one of the tube halves 3a u. 3b wrapped existing jacket pipe. The tube halves have lugs 4 through which they are held on the slide rails 5. Additional approaches 6 subvert the Slide rails. The slide rails are in pairs, parallel to each other to the center of the container arranged inclined. If an upper and a lower rail guide are provided, so the two rail guides are also arranged parallel to one another.

In the area of the upper rail guide, the tube halves 3a u, 3b additional approaches 7 on which tension members 8 are attached. The traction organs 8 are connected to power cylinders 9 at their upper end. Here are the power cylinders 9 arranged in pivot bearings 11 in the lid lo of the mixing container 1. In the lid 10 the mixing container has openings (not shown) through which cleaning devices, introduced in particular for the screw and the inner surfaces of the casing tube parts will.

The cleaning of the jacket pipe 3a, 3b takes place in such a way that the Cylinder 9 is acted upon and thereby the pulling elements 8 are pulled upwards. the Casing pipe parts 3a and 3b slide outwards on the slide rails 5, which occurs through the arrangement of the cylinder 9 in pivot bearings 11 is made possible.

By simultaneously lifting the jacket pipe parts 3a and 3b, a Contact of these parts with the lower conical part of the mixing container 1 is avoided and thus a greater distance from the screw is achieved. Now you can through openings in the lid lo of the mixing container cleaning devices, e.g. brushes, spray nozzles or Like. Be introduced. After cleaning, the jacket tube parts 3a slide u. 3b after pressure reduction in the Cylinders 9 in their starting position return. Of course, they can also be acted upon on both sides with the help of Cylinder 9 forcibly guided and held pressed against one another in their initial position will.

The lower bearing 12 of the worm 2 is designed as a track journal bearing, the shaft of the worm 2 carrying the bearing bushing 13 and the bearing journal 14 is arranged on a plate 15 on the housing bottom. The journal has a continuous central bore 16, which can be closed by a plug 17 on the outside. One further, parallel to the bore 16 applied bore 18 opens in the area of the lower Limit of the sliding surface where an annular groove 19 is provided in the pin 14.

Through the bore 16, lubricants can enter the cavity 20 of the bearing bush 13 are introduced while the outflow of used lubricant quantities, which accumulate in the annular groove 19, via the bore 18 takes place.

On the underside of the sleeve 13 scrapers 21 are arranged, the to prevent the material to be mixed from sticking to the bearing pin during the mixing process. The bearing pin sits in a thread 22 of the plate 15 and can thus be seen from the underside can be unscrewed. If it is necessary to replace the sleeve 13, can the plate 15 can be removed in the same way.

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Claims (11)

Claims 1. Standing screw mixer with cylindrical or conical mixing screw and this surrounding axially divided jacket tube, thereby characterized in that the casing pipe parts (3a, 3h) are arranged on slide rails (5) are. 2. Screw mixer according to claim 1, characterized in that the Slide rails (5) are arranged sloping towards the screw (2). 3. Screw mixer according to claim 1 or 2, characterized in that that an upper and a lower rail guide is provided. 4. screw mixer according to claims 1-3, characterized in that Attack tension members (8) in the area of the upper rail guide on the casing pipe parts. 5. Screw mixer according to claim 4, characterized in that the Pulling elements (8) are connected to power cylinders (9). 6. screw mixer according to claim 5, characterized in that the Power cylinder (9) arranged in pivot bearings (11) in the lid of the mixing container are. 7. Screw mixer according to claims 1-6, characterized in that Openings in the lid (10) of the mixing container for inserting cleaning equipment, in particular for the screw and the inner surfaces of the casing tube parts, provided are. 8.Lower bearing for the screw of an upright screw mixer, characterized in that it is designed as a track journal bearing, the worm shaft the bearing bush (13) and the bearing pin (11) on the housing bottom of the mixer is arranged. 9 * bearing according to claim 8, characterized in that the bearing journal (14) is detachable from the outside on the housing base. 10. Bearing according to claim 8 or 9, characterized in that the Bearing bush accessible from the outside and replaceable after removing the bearing journal is. 11 bearing according to claim 8-lo, characterized in that the bearing journal one continuous, central one and an additional one in the area of the lower sliding surface limit has opening bore.