DE1577272A1 - Twin screw press - Google Patents

Description

Twin screw press

The invention relates to a twin screw press for pressing palm fruits, aqueous material 'odeg6gl. the Pairs of worms have opposing threads and run in opposite directions in a strainer. Zwisden the order of the colander and the end faces of the last The threads of the snails are "I" in g * windeleeer Pressure chamber, the discharge cross-section of which looks through in and out ebbare Preßkonen is designed adjustable.

Changes in pressure occur in the threadless pressure chamber that cannot be controlled with the previously known means. As a result, the squeezing out of Palm fruits as well as from watery · «Good continuously changes ·

The invention has set itself the task, tm discharge

109841 / ÜÜ07 BADORlGiNAL

the twin screw press to control the high pressures as far as possible, which are constantly changing. you Essence is seen in particular in the fact that a fluid cylinder is connected to an axially adjustable press cone Control piston through a compensating line with a Accumulator is connected, which is above its liquid level under the action of an "Luftspjrieher", de see Pressure is adjustable

The subject of the invention is shown schematically in the drawing by means of an exemplary embodiment, namely show

FIG. 1 shows a longitudinal section through a twin screw press according to the invention

Fig. 2 shows the top view of the object of Fig. I.

The press relating to the subject matter of the invention consists of two screws 1 and 2 which rotate in a strainer 3. The worms 1 and 2 have threads running in opposite directions and have a drive in the opposite direction 3 has a multiplicity of perforations in order to separate them from the solid components by pressing Let liquids escape to the outside · Between the discharge 4 at the end of the strainer 3 and the last thread turns 5 of the screws 1 and 2 there is an unthreaded pressure rium 6. This pressure rium is what will become solid components of the treated material through the discharge

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Sheet 3

4 pushed out, in which Preßkcmen 7 pushes in and out are arranged bar. In the embodiment shown in * the drawing, the discharge 4.7 expands to outside, so that the ejected solid material becomes all the drier «the further the pressing cones 7 are pushed into the end of the sieve are"

The press cones 7 are slidable on the ScheckenapindelnS arranged and sitting on pipe rods 9, in which the The worm spindles 8 are concentrically mounted · The pipe rods have a positive connection with the actuating piston which slide back and forth in a liquid cylinder 11. A liquid line 13 leads from a liquid pump 12 on the ends of the liquid * ylnders 11 · The end of the liquid cylinder 11 · The ends of the liquid cylinder ll are available via the switching lines 13 * and 13b by means of the switching valves 14 assigned to them with the Liquid pump 12 in connection. Depending on the open position de «eir-en and closed position de.« other switching valve the actuating piston Io is acted upon either on one side or on its other side.

This has the consequence that the cane rods 9 the preacons 7 slide it in or out of the discharge to remove the separated eject solid parts in as dry a condition as possible.

Ee is initially in the sense of the invention, in the pressure chamber 6

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084

Sheet 4

to ensure a constant pressure, which makes the Aufeabe solved wjrd, a uniform design of the ejection to ensure. For this purpose, a compensation facility will be established provided, which acts on the adjustment device 9 to l4 as a function of the load. The pressure equalization takes place thereby instead of the previously fixed bin position of the actuating piston, which is inevitably given by the known · hydraulics is, is designed to be compliant. The balancing effect is further increased by the fact that the compliance there is also a resilient effect *

In the embodiment shown in FIG the liquid cylinder 11 of an actuating piston Io connected to the axially adjustable press cones 7 is through

an equalizing line 15 with an accumulator l6 verbün de

the. The changing liquid level 17 of the accumulator. «? 16 is under the action of an air cushion 18, the pressure of which is designed to be adjustable. On the liquid level 17 of the .Akkumulators l6 a moving in a compensation cylinder 19 balance piston Sun floats This balance piston 2o has standing over uinm rod 21 with an under variable pressure "! Air piston 22 connection / The difference between the diameters of the compensating piston 20 and the air piston 22 corresponds to the adjusting force which is necessary for the displacement of the plunger 7.

109841/0007 bad original

Sheet 5

In the embodiment shown in FIG. 1, a compressor 23 inflates the necessary air pressure in the Air cushion 18 above the air piston 22. In the air duct device 26 JBWis the air cushion 18 and the accumulator 23 there is a pressure regulator 2% and a shut-off element 23 When the shut-off device 25 is closed, the pressure in the LwftpdUiter 18 upheld. The consequence of this is that there are fluctuations in pressure in the pressure chamber 6 balancing and resilient via the adjustment device 9 to 14 via the accumulator to

and 22
as well as the piston 2 </ are received in the running pad 1β.

If the target pressure in pressure chamber 6 is to be changed, it is sufficient to enter the pressure in the air cushion Ϊ8 enta? R * «he» <! stt change. This can be achieved by setting the pressure regulator 2h accordingly and opening the shut-off device 25, which means that the press cones 7 are adjusted to the changed mean pressure in the air cushion 18 and thus generate a changed setpoint pressure in the pressure chamber 6. What is achieved hereby is that "the regulating device 16 to 26 with the actuating piston to al" are designed to confirm the setting device 9 to Ik which confirms the Preft cones 7

109841/0009

Claims (2)

Sheet of claims esexssssssssssrisssssssssssssse 1. Double screw press for pressing out palm trees, watery material or the like. "It is a linst el! Device for press cones which are arranged in a threadless pressure area in the Aastrag in a threadless pressure area by means of a hydraulic system that absorbs the axial pressures and can be pushed out, characterized in that, that a fluid flow cylinder (11) of an actuator (lo) connected to the axially adjustable press cones (71) is connected by an equal line (15) to an accumulator (16) which is above its liquid level. * * (17) under the action of a Air cushion (l8) is available, the pressure of which is designed to be adjustable. 2. Double screw press according to Claiml, characterized in that on de · liquid level (17) of the accumulator (l6) into a compensating cylinder (19) sliding compensating piston (2o). It swims through a rod (21) with a variable air pressure standing air piston (22) is connected, the difference between the diameters of the compensating piston (20) and air piston (22) corresponds to the adjustment force, that for the displacements of the press line * (7) n «t-tra« dif are. BATH 109841/0001 Sheet 7 3, twin screw press according to claims 1 and 2, characterized in that the air pressure generated by a compressor (23) or the like is the maximum Adjusting force for the displacements of the press cones (7) corresponds and through a pressure regulator (24) and «in Shut-off element (25), which are arranged in the air line (26), are set to the Yeretell force to be generated in each case is. k. Double screw press according to claims 1 to 5, characterized in that the regulating device for the air cushion (18) and the accumulator (16) for pressure fluid are designed together with the adjusting piston (lo) as adjusting devices controlling the press cones (7). The patent attorney Dipl.-Ing. BAD ■ '**' ■ 109841 / OOOf L e r s e i t e