SU906632A1 - Apparatus for sorting wooden chip - Google Patents

Description

(54) DEVICE FOR SORTING WOOD

I

The invention relates to sorts for grinding wood particles used in the woodworking industry for the manufacture of chipboard.

A separator for bulk materials is known, including a casing, classifying chambers, discharge and loading nozzles, a distributor, a suction nozzle, an air duct for creating an upward air flow in the classifying chamber 1 J.

The disadvantage of this separator is that the material to be sorted is divided into only two fractions: dust and a mixture of conditioned and coarse particles. To separate the conditioned fraction, it is necessary to re-sort the product mixture in the second separator.

It is also known a device for sorting particles, comprising a housing, vertical cascading chambers of a zigzag shape, a fan. SHAVINGS

chamber section controller, loading and unloading devices j 2.

A disadvantage of the known device is the low quality of sorting.

The purpose of the invention is to improve the quality of sorting.

The goal is achieved by the fact that the device is equipped with cup-shaped dividing inserts installed in each chamber above the loading device with distribution shaped edges; The separating inserts are mounted with the possibility of vertical movement, and the chamber section regulator is made in the form of a pair of two hinge plates mounted on the wall of the chamber above the separating insert.

Claims (2)

FIG. 1 shows the sorting, general view; in fig. 2 shows a section A-A in FIG. in fig. 3 section bb in FIG. in fig. - view with inserted insert in channel 39 The device consists of a housing 1, in which several vertical zigzag chambers 2 are rigidly installed, forming channels, B channels are fitted with cupped hollow separating inserts 3, telescopically connected to discharge discharge pipes k The insert is connected to special tool 5 D its vertical movement is complete. in the form of pivotally connected levers. The outer surface of the insert has distribution shaped ribs 6 for uniform distribution of particle mixture over the channel cross section. On the zigzag cascades over the insert are mounted pivotally doubled plates 7 for changing the cross section of the channel. for loading and distributing at the ends of the particles being sorted, consisting of the screw 10 and the casting roller 11. A nozzle is used to remove dust OK 12. The movement of the plates 7 is carried out with the lever of rotation 13. The device operates as follows. The material to be sorted is fed to distribution device 9. in which the particles captures the screw 10 and feeds them through the slit to the throwing roller 11. It evenly distributes the particles along the zigzag channels of the device. Air flows, which penetrate the flying granular material, are injected into the channels from bottom to top. At the same time, dust particles having a minimum soar rate are picked up by the stream and carried away to the cyclone for sedimentation through the nozzle 12. Coarse, thick particles with the highest soar rate for which the flow rate is insufficient to carry them away, fall down and are removed from the device. Thin light particles rise up through the channels at variable speed. Having risen to the zone of location of the insert 3, the strand aerofluid due to the figured fins 6 on its surface is uniformly distributed over the entire cross section of the channel. At the same time, the flow velocity (due to the fact that the cross section of the channel is reduced by the volume of the insert 3) is increased in this zone. As soon as the particles go into the zone above the insert 3, where the cross section of the channel increases, the flow velocity drops sharply, the trickles fall out of the air mixture insert and enter through the pipeline into the bunker 8. The same sailing particles, which continue: (movement, hit the insert. In this way, the plates 7 with the insert 3 form a zone of falling out of the flow of plate sailing particles, therefore, their size, quantity and quality of separation material and is controlled by vertical movement of the cupped insert by means of the device 5. This allows reducing or increasing the particle drop zone. This zone is also regulated by approaching or removing the plates 7 with respect to the zigzag cascades 2 by the turn lever 13. The plates allows to improve the quality of the separation of the material into three fractions: dust, conditional chips, chips, which makes it possible to improve the physical and mechanical properties of the produced plates. The invention includes a device for sorting wood chips, including a housing, vertical cascade chambers of a zigzag shape, a fan installed in each chamber, a section regulator of the chamber with a turn lever, loading and unloading devices, characterized in that, in order to improve the quality of sorting, the device equipped with cup-shaped dividing inserts and distribution curly fins installed in each chamber above the loading device; Vertically movable, and the cross section adjuster; measures in the form of a pair of two hinge plates mounted on the wall of the chamber above the partition insert. Sources of information taken into account in the examination 1. Demidov Yu.M. Shredding wood for the production of chipboard. M., Lesna industry, 197t, rice. 26, 107. 2. USSR author's certificate tf 97061, cl. B 07 B k / G2, 197 (prototype),