DE1961511A1 - Centrifugal ring roller mill - Google Patents

Description

STONE INDUSTRY, 24, rue Erlanger, Paris 16 (Seine, France)

Centrifugal ring roller mill addendum to patent (pat. App. P 18 04 744.4-23)

The invention relates to a centrifugal ring roller mill with a disk which is provided at the upper end of a shaft driving it and, under the effect of centrifugal force, with a disk which is arranged above the disk Grinding ring carries cooperating rollers, as well as with an air flow directed against the direction of fall of the ground material, the disk being arranged at the bottom of the grinding chamber, according to the patent (Patentanmeldunq

P 18 04 744.4-23).

The centrifugal roller mill according to the main patent already has, among other things, compared to the previously known centrifugal roller mills. the advantage of a greater simplicity of construction and an associated lower weight.

The invention is dia task Orunile _f uon building still simplify waiter, thereby reducing <h \ ~ weight nor inuhr. ^r H <v:>! Aufya 'α 1: Λ. jcaTiäß eier invention thereby <felr'-r; t, üais i! le D ^r n IUv. unmistakable on the exit ?; / <; iLo tier; in bokn »hf:» ¹ .r V / a.: - Ks ur.tev-

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Half of the bottom of the grinding chamber arranged reduction gear is detachably attached. As a result, the output shaft of the reduction gear also serves as a drive shaft the disk and the radial and axial bearings of this gear shaft also serve to guide and support the This saves the weight for a separate one Drive shaft with their bearings. In addition, the structure of the entire centrifugal ring roller mill is easier, and in case of wear or damage to the bearings, it is sufficient to remove the pulley from the output shaft of the reduction gear to solve and to carry out a replacement repair of the reduction gear, especially then, when a commercially available reduction gear is used.

In a preferred embodiment it is provided that a compressed air connection in the vicinity of the output shaft of the reduction gear opens into a passage that passes through an annular collar arranged on the underside of the disc is formed. When the air pressure is this Compressed air connection is at least equal to the pressure inside the centrifugal ring roller mill this air flow that dust particles from inside the mill up to the output shaft of the reduction gear and enter the gear box.

In a particularly advantageous embodiment of the centrifugal ring roller mill is provided that the lower part is provided with only a single inlet opening for the discharge Znm and view Mahlcjufces serving airflow. By dai; Lack of the usually usual blading : the V sr bulling disses air flow is the total weight of the FJLehkfaftringrolienmühle again

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considerably reduced and their structure visibly simplified.

The invention is explained in detail in the following description with reference to an embodiment example, which is shown in a drawing, which is a schematic Vertical section shows.

The centrifugal force ingrollcnmühie v / unites a grinding chamber 1 circular cross-section and a lower part la, which is provided with an inlet opening 23 for an air flow required for discharging and sifting the ground material. In contrast to the meant with pendularly arranged grinding rollers ve j machine riiehkraitring roller mills, where the air trorn is fed through a chamber that supports it distributed by means of fixed blades, Here the air flow becomes direct and without blading fed, making the grinder both simpler and lighter.

The mil ore part of the grinding canisters has a firm roll 4 iur; High strength steel.

A disc 10 arranged on the testicle of the lower part la of the grinding chamber carries grinding rollers 11 which are pressed against the taxiway 4 by centrifugal force while the garbage Ie is running. Each grinding roller 11 can rotate freely about an axis whose oi'KT-; End mi! a bracket 14 connected lsi, which can swing around Schwonhaehson 15, which are carried by the disc 10. With this driver 18 are also connected, which throw the raw material to be ground onto the rolling path 4 of the grinding rollers 11. Instead of the driver 18, however, any other suitable device can also be used.

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The disk 10 is directly on the output shaft 24 of a conventional commercially available reduction gear 25 placed, the housing of which is attached to the lower part of the grinding chamber.

The disk 10 is firmly connected to the shaft 24 by means of a conical sleeve 26. The connection can also be made by a spline connection or by any other equivalent means.

The vertically arranged transmission output shaft 24 rotates with its bearing journals in bearings 27 and 27 ¹ , which also form thrust bearings, and carries a gear wheel 28 which is in engagement with a gear wheel 29 which is connected to a second shaft 30 which is also a bevel gear 31 carries. The latter is in mesh with a bevel gear 32 which is seated on the transmission input shaft, which is driven by a suitable motor.

In addition, there is one passing through the reduction gear 25 Compressed air connection 34 is provided, which is located at the point indicated by 35 below the disc 10 in the Near the transmission output shaft 24 opens. This air, the pressure of which is at least equal to that which is inside the mill due to the air flow supplied through the inlet opening 23, flows into a passage,

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which is formed by an annular collar 36 arranged on the underside of the disk 10. This Air flow prevents the dust particles from reaching the shaft 24 and entering the reduction gear 25.

009849/1205

Claims (3)

Claims 1. Centrifugal ring roller mill with a disc, which on upper end of a shaft driving them is provided and under the action of centrifugal force with a Above the disc arranged grinding ring carries cooperating rollers, as well as with one against the direction of fall of the ground material directed air flow, wherein the disc is arranged at the bottom of the grinding chamber, according to the patent (patent application P 18 04 744.4-23 \ characterized in that the disc (10) directly on the output shaft (24) of the in a known manner below the bottom of the grinding chamber (1, la) arranged reduction gear (25) placed removably is. 2. Centrifugal ring roller mill according to claim 1, characterized in that that a known compressed air connection (34) in the vicinity of the output shaft (24) of the reduction gear (25) opens into a passage which is arranged through one on the underside of the disc (10) annular collar (36) is formed. 3. Centrifugal ring roller mill according to claim 1 or 2, the grinding chamber is divided into an upper part and a lower part, through which the air flow serving for discharging and sifting the ground material is supplied, characterized in that the lower part (la) only has a simple inlet opening for the airflow is provided. 0098 4 9/1205 Blank page