DE2342270A1 - Dust extractor for coke conveyor - has adjustable air inlet grating controlled hydraulically - Google Patents

Abstract

The coke conveyor consists of an inclined closed shute. An air fan unit is fitted below the shute with an inlet chamber opening to the floor of the shute. The opening is fitted with a set of transverse coupled metal slats which are arranged stepwise and mounted on pivoted supports. The supports are coupled to a hinged bar connected to a hydraulic piston. The hydraulic cylinder is hinged to the shute at its far end. An extractor outlet is positioned above and slightly downstream of the air inlet. The design allows the airflow to be controlled by varying the slot width between the slats. The arrangement prevents clogging and protects the fan system.

Description

DEDUSTING DEVICE FOR BULK MATERIALS

The present invention relates to the coking industry . and more precisely to a dust collector for bulk goods and especially for coke during its transport with continuous conveyors

Dedusting devices for bulk goods are already known which contain an inclined slide through which move these bulk goods under the effect of visual force

There is an opening in the bottom of the slide that goes through a grille is covered, under which a nozzle is attached in the slide, which is used for the supply of compressed air source generated compressed air into the slide cavity the grid serves

An opening is provided in the upper part of the slide into which An inlet nozzle is installed above the chute, which removes the mixture of air and entrained dust Bulk material serves

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In these devices, the grid represents a perforated one Surface represents "which is shaken while the fixture is in operation in order to better remove the dust from it"

One of the disadvantages of these devices is that when the compressed air supply suddenly stops, the openings in the perforated grille are blocked by pieces of bulk material, and so is the compressed air supply nozzle contaminates those bits that fall through the grille openings.

In addition, no possibility of adjusting the grid openings is provided in the known devices in this way to change the parameters of the compressed air flow. This limits the range of applications for these devices.

The aim of the present invention is to eliminate the drawbacks mentioned.

The invention was based on the object of a dedusting device for bulk goods with such a grid, the construction of which allows the clogging of the Exclude grid by pieces of the bulk material to be dedusted and also to prevent that through such pieces the compressed air supply nozzle becomes contaminated, even if the supply of compressed air suddenly stops ^. this everything should ultimately contribute to improving the operating characteristics of the device as a whole will·

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In addition, the possibility of setting the compressed air flow parameters was provided to regulate by inducing the permeability of the grid to bulk goods with different grain size dedusting

This task is performed by a dust collector solved for bulk goods, which along a closed

Slanted slide promoted «earth an opening in its bottom

has one with a grid, which opens the slide cavity with ν connects nozzles attached to the underside of the slide, through which the compressed air is fed under the grille, nourishing there is an opening in the upper part of the slide, which the slide cavity with the inlet nozzle connects through which the mixture of air and dust-like bulk material particles, which is formed in the chute cavity after the ascending flow of compressed air has passed through the bulk material layer, sucked off will.

According to the invention, the grid is provided with slots and composed of individual, parallel plates, which are arranged in steps, perpendicular to the slide axis direction and installed so that they are simultaneously around their Longitudinal axes can be pivoted so that the width of the slots between these plates can be adjusted when regulating can.

Such a step-like arrangement of the grid plates enables the bulk material during its conveyance ^ along the

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Inclined slide successively from the top plates to the lower switch pour without it, even if the supply suddenly ¹ CItCUQg of compressed air under the grid to listen _to; does not get into the slots between the plates.

As a result, the operating conditions of the dedusting device are ultimately improved, since additional time is required There is no need to clean the grille and air supply pipe from bulk material that has got into it.

In addition, the step-like arrangement of the grid plates contributes for a better loosening of the bulk material, whereby it is dedusted more effectively

It is also to be noted that such an arrangement of the grid plates, which regulates the slot width between enables them, also allows the effective passage area of the grating to be adjusted and, in this way, the amount the compressed air fed into the chute depending on the amount of bulk material to be dedusted and the grain size to change the same

Appropriately, the grid plates are pivoted by means of levers, each of which has one of its ends rigidly attached to it attached to the axis of the corresponding plate and at the other end to a rod common to all levers, is articulated, which is arranged parallel to the slide bottom in such a way that it during the regulation of the Slot width between the plates with respect to the slide can be moved back and he 2U ν

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Such a solution enables simultaneous adjustment the slots between all grid plates

A hydraulic cylinder can be used as a drive to swivel the plates »with the actual cylinder its end face articulated with the underside of the carriage floor coupled while its piston rod is articulated with the Rod end is connected

One of the possible variants of the invention is described in detail below with reference to the accompanying drawings j it shows:

Fig. 1 schematically in longitudinal section the overall view a dust extractor for coke and;

FIG. 2 shows the view according to arrow A in FIG. 1.

The dust removal device for coke contains an inclined chute 1 (Fig. 1), which is closed from above, along which the coke is moved under the action of gravity.

In the bottom 2 of the kitsche 1 an opening is provided in which a slot grille 3 is mounted "

Under the grid 3, a nozzle 4 is attached to the bottom 2 of the slide 1, which with the pressure nozzle one lower fan 5 »of the compressed air through slots in the grille 3 in the cavity of the But see 1 promotes, communicates

In the one provided in the cover 6 of the slide 1 above the grid 3 Opening is an inlet nozzle 7 built in which over a dust collector (not shown) with the suction

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nozzle of an upper fan 8 is connected, which the mixture of air and dust-like coke particles from the space of the slide 1 sucks off the bulk material located on the grid 3.

The air-permeable grille 3 is provided with slots and composed of individual "rectangular plates 9 lying parallel to one another". These plates 9 are stepped one above the other in the direction perpendicular to the longitudinal axis of the slide 1 and are arranged in such a way that slots 10 are between their long edges are "

On each plate 9 of the grid 3 is along its geometric Axis is attached to a longitudinal axis 11, the ends of which are inserted into bearings 12 (FIG. 2), are attached to side walls 13 of the Slide 1 are attached

At one of the ends of this axis 11 »which over the Slide 1 protrudes »a lever 14 is rigidly attached» the other end of which is articulated to an inclined rod 15 »which is common to all levers 14 and is parallel to the bottom 2 of the slide 1 is attached.

One end of this rod 15 is articulated to the piston rod 16 of the hydraulic cylinder »during the actual Cylinder 17 of the same with its end face with the Bottom 2 of the slide 1 is articulated from below.

The plates 9 of the grid 3 are in order to extend their service life »on the top with wear-resistant material 18 »for example diabase (stone cast), covered ·

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· "7 ■»

The device works as follows

The coke wet comes from above while it is being transported down on the bottom 2 of the slide 1 on the flats 9 of the grid 3 and is τοη each higher plate 9 on the lower lying successively poured over, whereby it does not get into the slots 10 in between, since the Eoksnasse with a a certain speed is promoted

When the fans 5 and 8 are switched on, the compressed air flow from the pressure port of the lower fan 5 strives through the

Nozzle 4 of the device up through the slots 10 of the grid 3 and tears at the moment in which the coke from a the plates 9 is poured onto another, fine dust-like Coke particles and brings them into the upper inlet connection 7, which is connected to the suction connection of the upper fan 8 connected is·

The air enriched with dust passes in order to protect the fan 8 against premature wear, previously one Dust collector.

The volume of air extracted by the upper fan should in order to extract the dust more effectively, be larger than the volume supplied by the lower fan 5

The parameters of the compressed air flow are dependent on the coke grains (apart from regulating the rotational speed of the fan 5) controlled by inducing the width of the slots 10 "" between the plates 9 of the grille 3 ·

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For this purpose the hydraulic cylinder is switched on, the piston rod 16 of which moves the rod 15, which at the same time pivots the levers 14 by one and the same angle.The levers in turn turn the axes 11 of the plates 9 of the grid 3 and consequently pivot the plates ^ _t whereby the Width of the slots in between is changed.

The device according to the invention increases the effectiveness in freeing the coke from dust and thereby contributes to Improving working conditions in the production rooms in which coke is processed.

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Claims (1)

PATENT CLAIMS 1 · Dedusting device for bulk goods, which are conveyed through a closed inclined chute, which is in its bottom has an opening bit grid, which the rut » slide cavity with one attached to the bottom of the slide Nozzle connects, over which the compressed air under the grid is fed, while there is an opening in the slide top, which the slide cavity with a Inlet nozzle connects through which the mixture of air and dust-like bulk material particles, which is in the chute cavity after the passage of the rising stream of compressed air through the bulk material layer forms, is sucked off, thereby characterized in that the grid (3) is bit slotted (10) and is composed of individual, mutually parallel plates (9), which are step-like, perpendicular to the Axial direction of the slide (1) are arranged and installed so that they can be pivoted about their longitudinal axes so when regulating the width of the slots (10) between these plates (9) can be adjusted 2 · Device according to claim 1, characterized in that the plates (9) of the grid (3) be pivoted by means of levers (14), each of which has one of its ends rigidly attached to the axis (11) of the corresponding Plate (9) is attached and the other end is articulated to the rod (15) common to all levers 509810/0069 "Oak parallel to 'the bottom (2) of the chute (1) is arranged in such a _t that they during the Begelns the width of the slots (10) between the plates (9) of the grid (3) with respect to the chute (1) Mn - and can be pushed out. 3 · Device according to claim 2, characterized in that the back and forth displacement the rod (15) is generated by a hydraulic cylinder, the actual cylinder (17) of which with its end face with the underside of the bottom (2) of the slide (1) is articulated, while its piston rod (16) is articulated with connected to the end of the rod (15) 509810/0069