SU551192A1 - Chip sizing device - Google Patents

Description

one

 The invention relates to chips for gluing chips, it can be applied in the woodworking industry.

Chip sizing devices are known, including a sizing chamber, nozzles for spraying glue, a feeder for 1 supplying dry chips, a rotating shaft with blades.

; However, such devices do not provide: even distribution of the binder throughout the wood particles, during operation, wood particles adhere to the inside of the mixer, moreover, the chips undergo agitation and heat during mixing, which ultimately leads to a decrease in physical-mechanical properties. plate indicators.

Chip sizing devices are also known, including a sizing bunker with loading and unloading hatches and a bottom in the form of a lattice, a retaining chamber adjacent to the bottom of the bunker, nozzles for feeding the binder and a feeder mounted at the entrance of the bunker.

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In such devices, the binder is carried away along with the exhaust gases, as a result of which its consumption increases, high-quality resinification of large fractions of chips is not ensured, since their tarring occurs in the flow of dust, which leads to a decrease in the physical-mechanical parameters {fever-alien-stitched.

The purpose of the invention is to improve the quality of sizing and reduce the consumption of the binder.

Claims (1)

In order to achieve this circuit, in the proposed device, the sizing bunker was cut off by a multistage one, divided into individual compartments by partitions and provided with additional rollers mounted between partitions and the bottom of the bunker; the latter pass through the bottom of the bunker at the locations of the feeder rollers and are directed along the flow of the chips, and the nozzles are fixed; ry installed obliquely. The drawing shows schematically the proposed device, a general view. Separating partitions 2 and 3 and a loading hatch 4 are located in the sizing chamber 1. In the hatch 4 a feeder 5 is installed in the form of shafts with elastic needles. The device is equipped with additional feeder rollers 6 installed in the bunker . Under the feeders there are fractionation devices in the form of a housing 7 with an alignment grout 8 and a nozzle 9 directed along the chip flow. The spray nozzles 10 are installed in the grate 11 under the nozzles 9 of the chamber 1. The grate 11 is located obliquely and together with the retaining chamber 12 provides movement of the chips in the fluidized bed to the next sizing stage in the chamber. 1. At the back of the chamber 1 is a partition wall 3 and the wall of the chamber 13 are formed to remove the sized dust, connected to the discharge hatch 14, in which the vacuum regulator 15 is located. The mixer works as follows. The wood particles through the charging port 4 and the feeder 5 enter the chamber 1 and paste the vanilla. The feeder 5, rotating, captures chips with elastic needles and throws it into the sizing zone, where the separation into fractions takes place. Pop-up feeder 5 has a housing 7 with a grating grating 8 and a nozzle 9. A nozzle 9 is fused along the stream of chips supplied by the feeder 5. An air jet from the nozzle 9 blows dust. The coarse fraction of the wood particles, the pod, is tarred by the spray nozzles 10. The tarred coarse fraction of the wood particles falls on the grate 11, the grater is mounted obliquely and together with the retaining chamber 12, which allows the particles to move in the fluidized bed, and goes to the next sizing stage. The wood particles enter the feeders 6, elastic needles, which are thrown into the sizing zone, where the particles are separated into fractions. The air flow from the nozzle 9, as in the first sizing stage, cries dust. The coarse fraction of wood particles, when dropped, is resinified with the aid of spouting nozzles 10. The coarse fraction of wood particles gets into the grid 11 of the sizing chamber in the fluidized bed formed on its surface with the help of a retaining chamber 12 and is directed to the discharge hatch 14. Dust on the first the sizing stages are glued with resin mist, larger particles get into motion ““ partition 2 and fall onto grid 11, from where they enter pi in the fluidized bed together with the large fraction STUDIO 6 to the second stage sizing. The main part of the dust is sucked off through the channel 13. In the hatch 14, dust and coarse fractions of wood particles are mixed. The degree of dilution in the sizing chamber 1 is changed by the regulator 15 of the dilution placed in the hatch 14. Thus, the proposed mixer improves the quality of the separate mixing of dust and chips with the binder due to uniform distribution and more complete sedimentation of it on wood particles, which also leads to lower binder consumption. DETAILED DESCRIPTION OF THE INVENTION Chip sizing device, comprising; sizing hoppers with loading and unloading hatches and a bottom in the form of a lattice, a holding chamber adjacent to the bottom of the bunker, nozzles for feeding the binder and a feeder roller installed at the entrance to the bunker, characterized in that, in order to improve the quality of sizing and reduce consumption binder, sizing bunker is made multi-stage, divided by partitions into separate compartments and equipped with additional feeder rollers installed between partitions and the bottom of the bunker, the built-in air in the supporting chamber Fractional arrangements in the form of a housing with leveling grids and nozzles, the latter passing through the bottom of the bunker at the locations of the feeder rollers and directed along the flow of the chips, and the nozzles are fixed under the nozzles in the bottom of the chamber installed obliquely. five , .:... .. / ./. -X - “-; r: -. .I -:,:: - h -7V: lr--: ---,. --r-.o,. ; I M 4.) L x .. “t, v ..: ... -. t. ;; ./.:. V. . . . - .- .. - - ,, .- ... V. -v / y.-A rv.S-; v -x .- - - .-. t N o /; v: