DD211515A5 - BRIQUETTING - Google Patents

Abstract

The invention relates to a briquetting press, in particular for planing saws, sawdust and wood dust. While the object of the invention is to increase the utility properties of briquetting presses in a cost effective manner, the object is to develop a briquetting press with which it is possible to obtain a consistent briquette strength by regulating the press resistance, with relatively low engine power and reduced energy consumption and simple construction. According to the invention, the object is achieved in such a way that the press shell is divided in the longitudinal direction and has two shell halves, wherein the lower shell half is firmly connected to the housing of the plunger so that the upper shell halves, close to the inlet neck and after the pre-press screw, are provided with a hinge is, so that this shell half is pivotally for extending the passage cross section and that the outer end of the upper shell half is in operative connection with a hydraulically actuated stop piston, so that the upper shell half is lifted when the pressure of the plunger exceeds a predetermined value.

Description

Berlin, 16. 01. 1984 A? 3 30 Β / 255 476/5 - 1 - 62 983/25 Ii

briquetting

Field of application of the invention

The invention relates to a briquetting press, in particular for wood shavings, sawdust and wood dust, with a conical Sinzug funnel, in which a jörder is provided, which is driven via a universal joint from below, with an intermittently driven Vorpreßschnecke, with a plunger and a cylinder-like Preßmantel ,

Characteristic of the known technical solutions

In DE-OS 23 13 343 a briquetting press, especially for metal chips published. 3in chip container is pierced by a ram, wherein a briquette is formed in a die. By moving the chip container, the die is removed from a closure plate and the briquette ejected from the ram so that it can fall down.

CH-PS 628 837 relates to a briquetting press for heating material from waste. Above a rotary table provided with press cylinder jackets, a fixed funnel is arranged which has a horizontal feed screw and a vertically acting pilot piston which stuffs the press cylinder jackets. The Vorpreßkolben diametrically opposite an upper plunger Lind act a lower counter-piston, the upper plunger presses the briquette with the opposing piston in a dispensing ring, from which it falls on an inclined plane.

-1 /, Λ Π '1 Q

AP B 30 3/255 47β / 5 - 2 - 62 983/25 II

In DE-OS 30 4-9 276 a briquetting press is proposed for use in the peat, coal and coking industry for the production of heating briquettes and for sowing in agriculture for the production of briquettes from coarse feed to the pattern of livestock. Among the fed from a bunker, provided with auger feed containers two driven in the opposite direction of rotation on Maltese crosses gear-like preforming cylinders are arranged. The teeth of these two pressing members limit in their pairwise comparison a cylindrical Yorpreßraum. The pre-pressed briquette is printed by a reciprocating ram through a conical constriction and a discharge channel.

Object of the invention

 O

The aim of the invention is to increase the utility properties of briquette pellets in a cost effective manner.

Explanation des.Wesens of the invention

The object of the invention is to develop a briquetting press, with which it is possible to achieve a constant strength of the briquettes by regulating the pressing resistance, with relatively low engine power and reduced energy consumption and simple design. This object is achieved by a briquetting press, which is characterized in that the press cover is divided in the longitudinal direction and has two shell halves, wherein the lower shell half is fixedly connected to the housing of the plunger, that the upper

AP B 30 Β / 255 47β / 5 - 3 - 62 983/25 II

Cup half, close to the inlet nozzle and after the Torpreßschnecke, is provided with a hinge, so that this shell half is pivotally to widen the passage cross-section and that the outer end of the upper shell half in üfirkverbindung with a hydraulically actuated stop piston, so that the upper Cup half is lifted when the pressure of the plunger exceeds a predetermined value.

According to the invention further that the stop piston via a pressure switch und.ein solenoid valve is in operative connection with the cylinder of the plunger.

For example

The solution according to the invention will be explained in more detail below in an embodiment with reference to the accompanying drawings

 3s show:

Hg. 1 a schematically drawn cross-section through the briquetting and

Pig. FIG. 2 is a view in the direction X of the discharge mouth of the press cover.

The briquetting press shown has a conical feed hopper 1, in which a Pörderweile 3 provided with blades 2 is installed. This one will be over from below. Bevel gear 4 and a universal joint 5 driven at the bottom of the feed hopper 1 is an intermittently driven Yorpreßschnecke 6 is provided, which to be molded into briquettes 7 wood residues 8, z. As wood shavings, sawdust and wood dust, brings in an oblique direction through an inlet connection 9 in a press jacket 10.

A? B 30 B / 255 476/5 - 4 - 62 983/25 Ii

Bin with a rear shoulder 12 trained plunger is actuated by a cylinder 11. When forward stroke of the plunger 13 presses the material supplied by the Vorpreßschnecke 6 in the press cover 10 so that in this four briquettes 7 come to lie one behind the other. The rear, from the plunger 13 relatively smoothly pressed briquette surfaces form the interfaces of the individual briquettes 7. The press cover 10 has two separate in its longitudinal center shell halves 10a; 10b on. The lower shell half 10a is fixedly connected to the housing 14 of the plunger 13. The upper shell half 10 b is provided close to Sinlaufstutzen 9 with a hinge 15, the pivot axis is transverse to the longitudinal axis of the press jacket 10. The upper shell half 10b is thus pivotable about the hinge 15 upwards, wherein the passage cross-section for the briquettes 7 expands and the pressing pressure is reduced.

On the outer end of the upper shell half 10b acts a hydraulically actuated stop piston .16 (FIG. 2). This is in operative connection with a solenoid valve, not shown in the drawing and a press cylinder 11 connected to the pressure switch 17th

The plunger 13 compresses the material with about 90 % of its maximum pressing force. Increases the pressing force above this value, so the Anschiagbolzen 16 is relaxed over the pressure switch 17, so that the upper shell half 10b can swivel slightly upwards. As a result, the pressing resistance is reduced to the plunger 13 and the outermost briquette 7 can be ejected trouble-free. Shortly before the plunger 13 has reached its front end position, a Bndschalter 18 causes a reverse stroke of the plunger 13 · If the plunger 13 has reached its rear Bndlage, the Vorpreßschnekke 6 is driven by an oil motor.

AP B 30 B / 255 476/5 - 5 - 62 983/25 Ii

When the delivery pressure of the roughing screw 6 has reached a predetermined value, the stroke direction is reversed with a pressure switch, not shown in the drawing

 The pressure behind the plunger 13 increases and also acts on the stopper piston 16, which presses the upper shell half 10b down. The Hagnet valve keeps the pressure on the stopper piston 16 again until the discharge pressure of the plunger 13 exceeds its predetermined value.

The standing under a certain adjustable pressure of the plunger pivotable upper shell half 10b causes a constant strength of the briquettes in various wood waste materials (chips, sawdust, wood dust), a jamming embarrassing the briquettes 7 and a reduced energy consumption.

Claims (2)

A? B 30 B / 255 476/5 - 6 - 62 983/25 Ii invention claim 1. Briquetting press, in particular for wood shavings, sawdust and wood dust, with a conical Binzughalichter, in which a conveyor shaft is provided, which is driven via a universal joint from below, with an intermittently driven Vorpreßschnecke, with a plunger and a cylinder-like Preßmantel, characterized characterized in that the press jacket (10) is divided in the longitudinal direction and has two shell halves (10a, 10b), the lower shell half (10a) being fixedly connected to the housing (14) of the press collar (13), such that the upper shell half (10b) , near the inlet nozzle (9) and after the pre-press screw (6), with a hinge (15) is provided, so that this shell half (10b) is pivotally upwardly to widen the passage cross-section, and that the outer end of the upper shell half (10b ) is in operative connection with a hydraulically actuated stop piston (16), so that the upper shell half (10 b) is lifted ,, .when the pressure of the plunger (13) exceeds a predetermined value. 2. briquetting press according to claim 1, characterized in that the stop piston (16) via a pressure switch (17) and a solenoid valve with the cylinder (11) of the plunger (13) is in operative connection. For this 1 page drawing