SU1021630A1 - Pneumatic separator - Google Patents

Abstract

A pneumatic separator containing a chamber with feed and output drivers, a fan, a mesh bottom: in the form of an infinite mesh conveyor drive, the driving drum of which is located at the output feeder, due to the fact that, in order to improve the separation and increase productivity The leading drum conveyor belt is hollow and perforated, covered by the HOOL in the zone located between the upper and lower branches of the mesh conveyor, and the swivel pipe for air supply. (P c

Description

KR

Od sb

The invention relates to pneumatic equipment for chopping wood particles and can be applied in the manufacture of particle boards.

A separator for bulk materials is known, which consists of a chamber with loading and unloading feeders, a fan and a grid. During the operation of the separator, wood particles continuously enter the net bottom through which the fan blows; air flow Q is suppressed. Light fine particles are caught by the flow and removed from the sorting chamber, and coarse particles, which sweep the large soaring speeds, with agitator. to the periphery of the j-day-day, and then through the discharge devices are removed from sorting 1.

The disadvantage of the separator is that when moving the chips along the mesh bottom it is constantly clogged with needle chips and the air flow rate changes i Violation of the optimal flow rate leads to a sharp deterioration in the quality of separation of the particle material 25 into fractions.

The closest to the proposed. is a stump in a separator containing a chamber with a charging and output feeders, a fan, a mesh bottom in the 30th form of a driving endless mesh conveyor, the K.OTopord driving drum is located at the output feeder 2} .:

A disadvantage of the known separator 35 is the low quality of sorting and low productivity.

The purpose of the invention is to improve separation and increase productivity .40

The goal is achieved by the fact that the main drum of the mesh conveyor is hollow and perforated, covered by a lid in the zone located between the upper and lower 45 branches of the mesh conveyor and provided with air inlets. -.

1 shows a pneumatic separator, a general view; figure 2 - section 50 aa in figure 1.

The device consists of a sorting chamber 1g in the upper part of which a working fan 2 is mounted for collecting and removing small fraction cells, and on the side of the loading feeder 3 for supplying sorting material, under which the mesh bottom is installed as a drive endless mesh conveyor 4. Lead

the drum 5 is equipped with an electric motor 6 and has openings 7; a nozzle 8 is installed to supply compressed air. The drum 5 is hollow and covered with a lid. In the zone located between the upper and lower branches of the mesh conveyor. In the lower part of chamber 1, an output feeder 10 is mounted for unloading the coarse fraction and a casing 11 with a screen 12 for air intake.

The device works as follows.

The mixture of wood particles through the feed hopper 3 continuously enters the sorting chamber 1 on the moving endless mesh conveyor 4, under which air flows from the bottom upwards through the casing 11. At the same time, light fine particles having a low soaring rate are lifted from the belt and carried away by fan 2 to the cyclone for deposition. The lower branch of the conveyor 4 is used to equalize the speeds of the vertical air flow. Large particles with a high soaking speed, for which the flow rate is insufficient to carry them, are dropped from the belt and removed through the feeder 10. The needle chips stuck in the upper branch of the mesh conveyor 4 are removed throughout its passage through the driving drum 5. the grid width with a stream of compressed air emanating from the holes 7. Thus, a uniform air supply is achieved over the entire area of the working branch of the conveyor 4. In the case when it is necessary to divide the material into more fractions, the necessary anovka one over another two similar devices. The quality of the separation of pulverized material and the productivity of the device is regulated by changing the frequency of rotation of the belt and changing the position of the angle of inclination of the bed 12.

As a result of using the device in the production of wood chipboards, the quality of separation of particles into fractions is improved, which makes it possible to improve the physicomechanical properties of the manufactured plates. A clear separation of the dust fractions from the particle mass improves the separation of the material and increases the plant capacity. The economic effect of the introduction of a pneumatic separator in a chipboard workshop with a capacity of 75 m plates per year is of the order. 4 thousand rubles

Claims (1)

PNEUMOSEPARATOR, containing a chamber with loading and output pi, heaters, a fan, a mesh bottom in the form of a drive endless mesh conveyor, the driving drum of which is located at the output feeder, characterized in that, in order to improve separation and increase productivity, the driving drum · mesh conveyor made hollow and perforated, covered by a lid in the area located between the upper and lower branches of the mesh conveyor, and equipped with a pipe for supplying air.