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Intake arrangement for a roller mill, roller mill having such an intake arrangement and method for determining the ground material fill level of a storage container of a roller mill

A technology of introduction device and storage box, which is applied in the field of grinding material level, can solve the problem of not corresponding to the actual material level of the storage box, and achieve the effect of improving accuracy

Pending Publication Date: 2021-03-30
BUEHLER AG
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Problems solved by technology

The disadvantage of the force sensor is that the level of the grinding material is not measured directly but indirectly, so calibration is required, which largely depends on the properties of the material to be ground, especially the density of the material to be ground
[0005] A disadvantage of such a measuring device is that the actual filling level measured by the measuring device may not correspond to the actual filling level of the storage tank

Method used

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  • Intake arrangement for a roller mill, roller mill having such an intake arrangement and method for determining the ground material fill level of a storage container of a roller mill
  • Intake arrangement for a roller mill, roller mill having such an intake arrangement and method for determining the ground material fill level of a storage container of a roller mill

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Embodiment Construction

[0062] figure 1 The introduction device 1 is schematically shown. The introduction device 1 comprises a storage box 2 with a grinding material inlet 3 and a grinding material outlet 4 . A metering device 5 , which is designed as a throttle valve, is also arranged at the ground material outlet 4 . The gap width of the ground stock outlet 4 can be changed by turning the throttle valve. Arranged on the tank 2 is a force sensor 6 which comprises an extension arm 9 which protrudes into the tank 2 and which can be designed, for example, as a bending beam.

[0063] When the storage bin 2 is filled with ground material, a cone of ground material is formed, which is schematically indicated by dashed lines. As soon as the ground stock cone reaches the extension arm 9, a gravitational force FG is applied to the latter. The control unit 8 is connected to the force sensor 6 (schematically shown by dashed line 10 ), thus detecting that the first filling level A has been reached in the s...

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Abstract

The invention relates to an intake arrangement (1) for a roller mill comprising a storage container (2), a force transducer (6) arranged on the storage container (2), a level sensor (7) arranged on the storage container (2) for determining when a ground material level (B) is reached in the storage container (2), and a control unit (8). According to the invention, the control unit (8) is designed to determine a first fill level (A) of the storage container (2) from a weight force (EG) determined by the force transducer (6) and to determine a characteristic fill level curve (K) based on the determined first fill level (A) and the fill level (B) determined by the level sensor (7).

Description

technical field [0001] The invention relates to an introduction device for a roller mill, a control unit for the introduction device and a roller mill with an introduction device according to the invention. The invention also relates to a method for determining the filling level of a roller mill and controlling the grinding material filling level of a storage tank of the roller mill. Background technique [0002] In prior art roller mills, upstream of the respective grinding channel, the ground material is fed, for example by gravity, into a storage box and accumulated there. The ground material is then metered and fed into the grinding nip by means of a discharge device, such as a feed roller. [0003] When the grinding operation starts, the filling level of the storage tank is firstly set to the target filling level manually, for example by an operator. It must be taken into account that on the one hand there is a sufficient free buffer volume (fill level as low as possi...

Claims

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Application Information

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IPC IPC(8): G01F25/00B02C4/28G01F23/20G01F22/00
CPCG01F22/00G01F23/20G01F25/0084B02C4/286G01F25/0092
Inventor D·里肯巴赫D·费舍尔D·马里诺斯
Owner BUEHLER AG
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