SU1215762A1 - Apparatus for photometric cleaning of chips - Google Patents

Description

The invention relates to a device for cleaning bark and rot from chips and can be used in the timber, pulp and paper and woodworking industries in the production of process chips.

The aim of the invention is to increase the efficiency of chip cleaning and the quality of the final product.

FIG. 1 shows a device for photometric cleaning of chips; general view; in fig. 2 — node I in FIG. 1 (schematic diagram of the chip separator).

A device for photometric chip cleaning includes a chip distributor 1, made in the form of sequentially installed one under another vibrating screen 2-4, mounted behind the chip distributor 1 a channel uncoupler 5 chips and a multi-tape conveyor 6 for its cleaning, an electron-optical converter 7 and an actuator 8. Distributor 1 chips installed on the shock absorbers 9 and is equipped with vibrators 10 and trays for removal of non-conforming fraction 11 and sorted chips 12. The upper sieve 2 of the distributor chips is equipped with a hook 13 for Change its working surface, and the bottom sieve 4 has partitions 14, orienting uienv in the channels of the separator 5 chips. Chip uncoupler 5 is made in the form of consecutive conveyor sections having support shafts, each section of which is a set of belts 15, envelopes of the pins 16, with the leading pins 16 of the previous section 17 and the driven pins 18 of the subsequent section 19 placed on the respective support shaft 20. a chip uncoupler 5 is mounted a multi-band chip cleaning conveyor 6 with a drive shaft 21. The support shafts 20 of the uncoupler 5 chips are kinematically connected to the drive shaft 21 of the cleaning conveyor 6 and driven by an electric motor m 22.

In the area of the conveyor 6 cleaning installed electro-optical Converter 7.

The actuator 8 is located under the conveyor 6 cleaning, the nozzle 23 which is installed in the intervals between its ribbons.

A device for photometric chip cleaning works as follows.

The initial chips are fed to the chip distributor 1, above the upper sieve 2 of which a spike 13 is installed, by means of which the distributor is dosed out at the expense of overlapping the surface of the sieve 2. Fouled sifter chips 5

through sieve 2-4 distributor 1 chips, the top 2 of which delays substandard chips of coarse fraction, intermediate 3 and lower 4 sieves, skip -5 chips fines, delay conditioned chips, since the sizes of the holes of the upper sieve 2 are the maximum allowable, and the sizes of the openings of the intermediate 3 and lower 4 sieves are the minimum allowable particle size of the conditional slit. The off-grade chips of the coarse and fine fraction are removed in trays 11. Simultaneously with the sorting by fractions, the clogged chips are distributed on the surface of the sieves into one layer and are separated by spacing with partition walls 14 installed on the lower sieve 4, through the channels.

In the case of a sieve 4 of the distributor 1, the chips are distributed in one layer and divided along the channels along the tray 12, the chips are dumped into the channel disconnector 5 of the chips.

where the creation of a predetermined interval between moving one after another chip particles occurs due to the fact that the speeds of the subsequent sections of the disconnector 5 are higher than the speeds of the previous sections.

The principle of operation of the splitter 5 chips is described in the following.

The driving pulleys 6 of the previous section 17 and the driving pulleys 18 of the subsequent section 19 are placed on the same shaft 20, therefore, they have the same frequency

for rotation, but since the diameter of the driven lugs 18 is larger than the diameter of the drive pulleys 16, then the speed of the subsequent section 19 is greater than the speed of the previous section 17. With the disconnector 5 chips coming with a predetermined interval, particles of clogged chips come

5 on the multi-tape conveyor 6 cleaning, made in the form of ribbons, envelopes supporting rollers. The drive of the cleaning conveyor 6 and the kinematically coupled chip separator 5 is provided by the engine 22. The cleaning conveyor 6 guides the chip particles to the inspection area carried out by the electron-optical converter 7.

When passing through a controlled area of particles whose reflectivity at least on one side does not match the installed sample, the electronic unit of the converter 7 directs the corresponding current pulses to the actuator 8 installed under the cleaning conveyor 6, when activated

which unwanted particles are blown from the cleaning conveyor 6 with an air jet, which is drawn by the nozzles 23 through the conveyor belts 6. Inspection and cleaning of chips moving along the remaining channels is carried out in a similar way.

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Claims (1)

A DEVICE FOR PHOTOMETRIC CLEANING OF CHIPS, including a wood chip distributor in the form of vibrating screens successively mounted one below the other, an electron-optical converter and an actuator, characterized in that, in order to increase the chip cleaning efficiency and the quality of the final product, it has a channel disconnector mounted behind the distributor wood chips and a multi-belt conveyor for cleaning it with a drive shaft, the actuator being made in the form of nozzles, the chip disconnector in the form of a sequential arrangement of the conveyor sections having support shafts, while the driving pulleys of the previous sections and the driven pulleys of the subsequent sections are mounted on the corresponding supporting shafts kinematically connected to the drive shaft of the cleaning conveyor, the nozzles of the actuator are installed between the belts of the cleaning conveyor, the upper vibrating screen is equipped with a gate to change its working surface, and the bottom - has partitions orienting the chips in the channels of the disconnector. FIG. 1 to SP <1 GO