SU1228927A1 - Air separator for grain products - Google Patents

Description

2. A separator according to claim 1, characterized in that the loading nozzle is provided with dividers made in the form of triangles with acute angles directed in the direction of supply of the source material and mounted for movement in the horizontal direction.

3. Separator according to claim 1, characterized in that.

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The invention relates to devices for cleaning grain and products of its processing, namely, air separators with a closed air cycle, and can be used in the milling, elevator, large and animal feed industry for cleaning grain and peeling products, as well as at this cleaning station. x and corn processing plants.

The purpose of the invention is to increase the separation efficiency due to the removal of light impurities from the sediment chamber.

FIG. schematically shows a separator; in fig. 2 - dividers; in fig. 3 is a device for leveling the field of air flow rates.

The air separator for grain products contains a loading nozzle 1 with two dividers 2, a sloping plate 3, with a threshold of 4, which is connected with a pneumo-separating channel 5 to the feeding slot 6.

In the lower part of the pivomozepariruyuschy channel 5 there is a device 7 for leveling the airflow velocity field and a collector 8 for the purified product, the upper part communicates with the sediment chamber 9. In the upper part of the sediment chamber 9, a diametrical fan 10 is installed located in front of the recirculation channel 11 for purified air, in the lower part there is a collection of impurities in the form of a screw 12. At the entrance to the sediment chamber 9 there is a throttling valve 13. Near the external inclined wall of the sediment chamber 9 there is a flat surface partition 14 forming a narrowing channel with the wall. A flat partition 14, made stationary, is equipped with a rotatable and sliding valve m 15 in the upper part. The dividers 2 move independently along the guides 16, their position is fixed by locking bolts 17. The fixture 7 for leveling the airflow velocity field is made in the form of curved plates

18, rigidly fixed ends on foxes

19, mounted on the support 20. The disks 19 are rotated around a horizontal axis and fixed by "thumb 21.

that in the pneumo-separating channel above the collector of the cleaned product there is a device for leveling the air flow velocity zero, made in the form of a set of curved plates fixed on the disks mounted on the side walls of the separator with the possibility of rotation around the horizontal axis.

The separator works as follows. A mixture, for example, a clogged grain of rice, enters the pneumo-steam-collecting channel 5 through the loading nozzle 1, where it is blown by the ascending air flow created by the diametral fan 10. Particles of the initial mixture having a soaring speed greater than the air velocity in the pneumo-separating channel 5 fall out in the form of a fraction of the purified product and removed from the separator through a collection of 8 purified products. Light impurity particles having a soaring speed lower than the airflow rate in the pneumo-separating channel 5 are carried away

into the sediment chamber 9, where under the action of centrifugal and gravitational forces fall into the lower part of the sediment chamber and out of the separator by the screw 12. The main air flow, turning from the outer inclined wall of the sedimentary chamber 9 to the diametrical fan 10, captures the lightest particles deposited impurities and carries them through the recirculation channel 11 to the purified product. Flat partition 14 eliminates

. this phenomenon improves the conditions for the deposition of light particles. The relieved purified air passes through the diametrical fan 10 and flows through the recirculation channel 11 into the pneumo-separating channel 5. With the help of the fitting 7 in the pneumo-separating channel 5, an equalized air flow velocity field is created.

The separation of the separator with a flat partition is necessary to separate the air flow, which does not contain light impurities,

5 entering a diameter fan, a narrowing channel, and a stream saturated with an impurity moving along a narrowing channel; moreover, as the channel narrows down, the velocity of air and precipitated impurities increase, which leads to an increase in the centrifugal forces of the particles and their separation from the air flow when turning it around the bottom edge of the flat partition.

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Comparative tests of the known and proposed separators showed that the amount of light impurities carried away from the sedimentary chamber in the proposed separator decreased by seven times compared with the known.

The installation of a scattering of triangular sections in the loading nozzle also improves the separation efficiency due to the uniform material feed. The results of the installation of a device for leveling the field of air flow velocities improves the separation efficiency. Thus, for example, the presence of an adaptation allows to increase the efficiency from 84 to 91% on buckwheat peeling products. On the basis of experimental studies, it has been established that the optimal range of airflow velocities is characterized by the location of a large accumulation region of an experimental sample of Q-gain in the middle of the channel and a torus ratio to establish that a 97.2% cleaning effect is achieved in the separator of maximum and average air velocities , and in the separator without the dissector 82.5%

whom flow ups 1x ,, what provides

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maximum cleaning effect.

Installing a field leveling device for air flow speeds improves separation efficiency. Thus, for example, the presence of an adaptation allows to increase the efficiency from 84 to 91% on buckwheat peeling products. On the basis of experimental studies, it has been established that the optimal range of airflow velocities is characterized by the location of a high velocity region in the middle of the channel and the ratio of the maximum and average airflow velocities

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maximum cleaning effect.

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FIG. 2

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Claims (3)

1. AIR SEPARATOR FOR GRAIN PRODUCTS, including a sequentially installed loading nozzle, a pneumatic separating channel, a sedimentation chamber with a diametrical fan located in its upper part, a recirculation channel for purified air, collections of purified product and impurities, characterized in that, in order to increase the efficiency of separation for by reducing the removal of light impurities from the sedimentary chamber, it is equipped with a baffle and a rotary-sliding valve fixed to it, installed in the sedimentary measure and forming the outer wall of the inclined settling vessel tapering towards the collection channel impurities. SU „„ 1228927 Fig. 1 2. The separator by π. 1, characterized in that "the loading nozzle is equipped with dividers made in the form of triangles with sharp angles directed towards the feed material and installed with the possibility of movement in the horizontal direction. 3. The separator by π. 1, characterized in that in the pneumatic separation channel above the purified product collector there is a device for leveling the air velocity field, made in the form of a set of curved plates rigidly mounted on disks mounted on the side walls of the separator with the possibility of rotation around a horizontal axis.