RU35251U1 - Vibrating screen - Google Patents

Description

 ° ° ° „MPK | GV07V1 / 28

Vibratory sifter.

The utility model relates to equipment for the baking industry, namely to unloading and sifting devices designed to unload bins, to prevent the food from hanging and stagnating and to clean it from impurities, and can be used in other industries where it is necessary to unload bulk containers material and removal of foreign impurities from it.

Known vibration sifter for flour, containing a divider, a sieve, a vibrating device, loading and unloading devices, as well as a container for collecting waste and flour (RU 2051757 C1.10.01.1996).

However, in the known device, the use of a divider in the form of an impeller does not allow for high-quality sifting of flour.

The utility model is aimed at reducing losses of flour, improving the quality of sifting, increasing the productivity of the device.

The specified technical result is achieved due to the fact that the vibrosifter contains a divider, a sieve, a vibrating device having unbalance cams with a shifted center of gravity, loading and unloading devices, as well as a container for collecting waste and leaving the flour, while the maximum diameter of the divider is 0, 88 internal diameter of the boot device, and the height of the divider is 0.09 0.12 of its maximum diameter, the sieve is installed at an angle a to the horizontal, which is determined by the formula sin 0.05-g-0.08.

In a preferred embodiment, the divider in the upper part contains a sphere whose diameter is approximately 2/9 of the maximum diameter of the divider having a conical surface in the lower part.

In the descending part of the sieve, in front of the container for collecting waste and gathering flour, it may be provided for) an apparatus for adjusting the gathering of flour.

In FIG. 1 schematically shows a vibratory screener; in FIG. 2 - sieve installation; in FIG. 3 - installation of the divider.

The vibro-sifter comprises a housing 1, a divider 5 and a screen 8 placed in it. A rigid bottom 3 is attached to the housing and, via levers 6, a loading device 2. An unloading device is attached to the bottom 4. The gaps between the housing 1 and the loading device 2 and the unloading device 4 are closed seal 11 and secured with clamps 12.

A container 9 with a shutter 10 for collecting waste and flour is located on the body.

A vibrating device 7 is also attached to the housing 1.

Vibrating screen works as follows.

Flour enters the hopper into the loading device 2 by gravity and moves in the radial direction. Due to the divider 5 installed on the flour path, the flow is formed in such a way that a uniform flow of flour is provided into the annular gap formed by the divider 5 and the inner walls of the loading device 2. Subject to the ratio of the maximum diameter of the divider D to the internal diameter of the loading device Z) j, equal to 0,, 88 (Z) / Z) j 0,, 88), an optimal annular gap is formed between the divider and the inner walls of the loading device, which eliminates the hang of flour, reduces the loss of flour and increases zvoditelnost device. At the same time, the divider itself is designed in such a way that flour freezes completely. In the upper part of the divider is a sphere that is approximately equal to 2/9 of the maximum diameter of the divider D, and the ratio of the height of the divider H to its maximum diameter D is in the range 0, (/ / 1) 0,).

Next, the flour enters the housing 1, where it is sifted through a sieve 8 and cleaned of impurities. Sieve 8 is installed at a certain angle, which ensures the most high-quality cleaning of flour from impurities. The angle is determined by the formula sina 0.05-7-0.08, which according to SM WI

Allows you to increase the efficiency of the sifting process, increase the productivity of the device, reduce the loss of flour and improve the quality of cleaning flour from impurities.

High-quality flour that has been cleaned through a sieve 8, enters the bottom 3 and, then, is removed from the machine through the unloading device 4. Particles of wholemeal flour and waste enter the container for collecting waste and flour 9, where it accumulates, and excludes the possibility of waste getting into high-quality flour. Damper 10 can be used to control the amount of descent by directing part of the wholemeal flour back to the screening process, which further reduces the loss of flour during screening.

The divider 5 and the sieve 8 are driven by a vibrating device 7, which, making high-frequency vibrations, transmits oscillatory movements to the housing 1 and through the housing to the divider and sieve.

Claims (3)

1. Vibratory sifter for flour, characterized in that it contains a divider, a sieve, a vibrating device having unbalance cams with a displaced center of gravity, loading and unloading devices, as well as a container for collecting waste and leaving the flour, while the maximum diameter of the divider is 0 , 82 ÷ 0.88 of the inner diameter of the loading device, and the height of the divider is 0.09 ÷ 0.12 of its maximum diameter, the sieve is set at an angle α to the horizontal, which is determined by the formula sin α = 0.05 ÷ 0.08. 2. The vibratory screener according to claim 1, characterized in that the divider in the upper part contains a sphere whose diameter is approximately 2/9 of the maximum diameter of the divider having a conical surface in the lower part. 3. Vibrating screener according to claim 1, characterized in that in the outlet part of the sieve, in front of the container for collecting waste and gathering flour, a device is provided for regulating the gathering of flour.