SU171134A1 - - Google Patents

Description

Installations for controlling the light reflectance of bulk materials in a stream are known. They are intended, for example, for flour and include a free flow part, made in the form of a chamber with a window, inside which, opposite the window, an exhibiting device and a photometer are mounted, placed outside the flow outlet, opposite the window.

The exposure device of these plants is designed to continuously form the surface of the material under test by compaction, and the photometer is to measure its reflectivity.

The proposed installation provides stabilization of the reflective surface of the material by compacting it with the help of vibration and thus enhancing the accuracy of control.

The design of this installation is simpler. This advantage is achieved as a result of the execution of the exposure device in the form of a tray connected to the vibro-drive, located opposite the wall with a window at an angle to the vertical and forming a wedge-shaped chamber with this wall. bunker with exit slot.

part of the vertical drift), inside which, opposite the wall with a window 2, an exhibiting device is installed, representing a tray 3 at an angle to the vertical with a vibration actuator 4, forming with partitions 5 and a chamber wall / wedge-shaped bunker with an output slit 6. placed outside the camera /, opposite its window.

Tray 3 and the vibrodrive 4 are fixed on the hinges 8, with the sensor 7 of the photometer and the vibrodrive 4 closed by a cover 9.

In the installation, the chamber is made with a larger cross-section than the cross-section of the drift, as a result of which the carrying capacity of the drift does not decrease, despite the fact that the bunker is located on the path of the flour.

Works proposed installation as follows.

Bulk material, such as flour, the passage through gravity and chamber 1, continuously fills the hopper. Under the action of vibration and gravity, the flour is compacted and leaves through slit 6. As it progresses, the compacted flour slides over the glazed window of the photometer sensor 7, which measures

Subject invention

A device for monitoring the light reflecting ability of bulk materials in a stream, such as flour, including a drift portion, made in the form of a chamber with a window, located inside it, opposite the window, an exposure device and a photometer, characterized in that thus improving the accuracy of control, the exposure device is made in the form of a tray with a vibro-drive, located at an angle to the side wall of the chamber and connected to it with the formation of a wedge-shaped bunker with the entrance gap.