EP0069202A2 - Presse à pulpe - Google Patents

Presse à pulpe Download PDF

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Publication number
EP0069202A2
EP0069202A2 EP82103351A EP82103351A EP0069202A2 EP 0069202 A2 EP0069202 A2 EP 0069202A2 EP 82103351 A EP82103351 A EP 82103351A EP 82103351 A EP82103351 A EP 82103351A EP 0069202 A2 EP0069202 A2 EP 0069202A2
Authority
EP
European Patent Office
Prior art keywords
drainage
axial
press
jacket
press according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP82103351A
Other languages
German (de)
English (en)
Other versions
EP0069202A3 (fr
Inventor
Hans Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Salzgitter Maschinen und Anlagen AG
Salzgitter Maschinen AG
Original Assignee
Salzgitter Maschinen und Anlagen AG
Salzgitter Maschinen AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Salzgitter Maschinen und Anlagen AG, Salzgitter Maschinen AG filed Critical Salzgitter Maschinen und Anlagen AG
Publication of EP0069202A2 publication Critical patent/EP0069202A2/fr
Publication of EP0069202A3 publication Critical patent/EP0069202A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/12—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material using pressing worms or screws co-operating with a permeable casing
    • B30B9/128—Vertical or inclined screw presses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B30—PRESSES
    • B30B—PRESSES IN GENERAL
    • B30B9/00—Presses specially adapted for particular purposes
    • B30B9/02—Presses specially adapted for particular purposes for squeezing-out liquid from liquid-containing material, e.g. juice from fruits, oil from oil-containing material
    • B30B9/26—Permeable casings or strainers

Definitions

  • the invention relates to a pulp press according to the preamble of patent claim 1
  • retainers are arranged in the axial gaps between adjacent screw blades, which are guided from the outside through openings in the spray jacket and in the screen jacket and fastened to the spray jacket.
  • the hull of the hollow press spindle is perforated along its entire length to discharge press liquid from the chip press cake.
  • the snail blades and the retainers are provided with sieve surfaces and with channels for draining off press liquid. Details of the construction of the pickup are not disclosed. It is unfavorable that the length of the retainer and thus its free outflow cross-sectional area decreases in a transport direction of the wood chip press.
  • crescent-shaped pick-ups are known per se which can be pivoted about their longitudinal axis, the pointed edge of which can be opposed to the stream of chips.
  • Each pick-up has a cavity which is connected to the pressing space via a series of nozzles in a rear wall of the pick-up.
  • the nozzles are used to supply heat to the press chamber, in particular with steam, to heat up the pulp press when starting up.
  • the nozzles should also be suitable for discharging press liquid.
  • the invention has for its object to increase the performance of the shredder press.
  • the dry matter of the pellet press cake discharged from the pellet mill should be increased further with the pellet remaining in the pellet mill for the same length of time.
  • the screen jacket is preferably of circular cylindrical design.
  • the shredder press can be operated standing or lying or at any intermediate inclination. It is particularly suitable for processing sugar beet chips.
  • the radial layer thickness of the chip press cake is limited to a relatively small value if one wants to achieve a sufficiently high dry matter. Thanks to the improved drainage properties of the new shredder press, the radial layer thickness of the shredder press cake at the outlet of the shredder press can advantageously be kept larger. This results in an advantageously larger throughput and / or, with the same filling quantity over time, a longer dwell time for the chips compared to the known chip presses.
  • Every drainage installation has a very favorable drainage effect because the liquid withdrawal in the perforated compression section can be influenced very well.
  • the imperforate expansion section prevents the liquid from being sucked out of the drainage installation in an undesirable manner by the expanding press chips.
  • Claim 3 results in a structural simplification because the drainage internals no longer have to be passed through the space between the screen jacket and the spray jacket and attached to the spray jacket.
  • the screen jacket equipped with the drainage internals can be divided lengthways.
  • Claim 5 takes into account the special technological conditions in the pressing process. He can be z. B. realize by varying the number of drainage internals in each axial zone of the wood chip press.
  • the frictional resistance for the Schnitzelpreßkuchen can be kept relatively low and at the same time achieve a particularly favorable drainage characteristic because of the increasing length of the drainage surfaces in the transport direction.
  • Claim 8 brings cost savings in the manufacture of the screen jacket and supports transport and compression effect through the screw blades.
  • Claim 11 brings a considerable simplification in the manufacture of the fuselage, without having to accept special losses in the dry matter that can be achieved.
  • the volume of the cut can decrease continuously be pressed in the direction of transport.
  • the targeted perforation of the fuselage according to claim 12 lowers the manufacturing costs for the fuselage and supports the drainage effect of the other assemblies of the shredder press in a favorable manner.
  • the press spindle 6 receives its rotary drive at the upper end by two diametrically opposed drives 15 and 16.
  • Sugar beet pulp is introduced into the filling housing 3 through at least one filling opening 17 in a manner known per se and pre-compressed by the screw wing 8.
  • the escalope or the escalope press cake formed therefrom is advanced through the auger blades 8 to 11 in a transport direction 18 by the escalator press 1 and discharged at the lower end of the press spindle 6 through an annular gap 19 into a collecting space 20 into the bottom housing 5, from which the removal takes place takes place in a manner known per se.
  • the fuselage 7 continuously increases in cross-sectional area, starting from a cylindrical section 21 in the area of the filling housing 3 up to the annular gap 19.
  • the housing 2 extends essentially from the cylindrical section 21 of the fuselage 7 to the annular gap 19 and has a cylindrical screen jacket 22 arranged at a small radial distance from the screw blades 9 to 11 and a spray jacket 23 surrounding the screen jacket 22 at a distance. So that's one Sieve jacket 22 opposite axial section 24 of the fuselage 7 is increasingly widened towards the bottom.
  • the spray jacket 23 is constructed from shots 25 to 27.
  • the screen jacket is divided into sections 28 to 30, each of which is divided into two parts that can be connected to one another in a longitudinal center plane. This division plane is rotated in FIG. 1 by 90 ° from the plane of the drawing.
  • drainage internals 34, 35 and 36 are arranged in axial zones 31, 32 and 33 of the pulping press 1, spaced apart from one another over the circumference of the screen jacket 22.
  • the drainage internals 34 to 36 are e.g. welded to the inside of the screen jacket 22.
  • the axial length of the drainage internals 34 to 36 increases from each of the axial zones 31 to 33 to the next one in the transport direction 18.
  • the drainage internals 34 to 36 each extend from the screen jacket 22 between the adjacent screw blades 9, 10 and 10, 11 or between the screw blades 11 and the annular gap 19 up to the vicinity of the fuselage 7.
  • Each drainage installation 34 to 36 has a cavity 37, which on the one hand has openings 38 in a wall 39 of the drainage installation 34 to 36 with the chip press cake and on the other hand has an outlet 40 with a space 41 between the screen jacket 22 and the Spray jacket 23 is connected.
  • the entire press liquid from the cavity 14 and from the space 41 is collected in the bottom housing 5 and from there derived in a manner known per se.
  • FIG. 2 shows the division of the weft 30 of the screen jacket 22 and the weft 27 of the spray jacket 23 into two equal halves, which are fastened to one another by screws 42.
  • a support structure 43 (FIG. 6) is not shown in FIGS. 1 and 2, with which the screen jacket 22 is supported on the spray jacket 23.
  • FIG. 2 also shows the circumferential distribution and circumferential extent of the drainage internals 36. A perforation 44 of the screen jacket 22 is also shown.
  • FIG. 3 shows a longitudinal section through one of the drainage internals 36.
  • the screen jacket 22 is imperforate on its surface 45, with the exception of the outlet 40, which is covered by the drainage internals 34 to 36.
  • Each of the drainage internals 34 to 36 has, as is shown in detail in FIG. 3 for one of the drainage internals 36, a compression section 46 which increases in the cross-sectional area in the transport direction 18 and which is provided with the openings 38.
  • the compression section 46 is followed by an expansion section 47 which decreases in cross-sectional area.
  • the screen jacket 22 is provided with a perforation 48, with the exception of the surfaces 45, while it is imperforate in the height area of the expansion section 47.
  • each drainage installation 34 to 36 is closed off in a liquid-tight manner by a bottom 49.
  • the floor 49 is so high that a complete The pressing liquid can be emptied through the outlet 40. This way, 40 nests of infection are avoided below the outlet.
  • the drainage installation 36 according to FIG. 4 is modified in comparison to that according to FIG. 3, in that a drainage section 50 of constant cross-sectional area and with perpendicular walls is arranged between the compression section 46 and the expansion section 47.
  • the openings 38 are also provided in the drainage section 50.
  • At the level of the drainage section 50 carries the screen jacket. 22, with the exception of the associated parts of the surfaces 45, a perforation 51.
  • the expansion section 47 is designed as a tube half, the inner radius of which corresponds to the radius of the outlet and which is aligned with the outlet 40.
  • This embodiment is simple in terms of production technology and avoids any dead space below the outlet 40.
  • the total free outflow cross-sectional area offered in each of the axial zones 31 to 33 through the openings 38 of the drainage internals 34 to 36 increases in the transport direction 18. As the dry matter content increases, dewatering is increasingly facilitated.
  • the screen jacket 22 is in an axial region determined by the length of the expansion section 47 in the transport direction 18 52 imperforate.
  • the screen jacket 22 is basically imperforate in its axial regions 53 opposite the screw blades 10 and 11.
  • a rear section 54 of the axial region 53, relative to the transport direction 18, is provided with the perforation 44.
  • the axial length of the rear section 54 is expediently approximately one third of the axial length of the axial region 53.
  • the support structure consists of axially parallel webs 55 distributed over the circumference, which are welded on the outside to the weft 27 and extend radially inwards.
  • a number of horizontal support rings 56 are welded to the webs 55, which extend radially inward over the end of the webs 55 and form an abutment for the screen jacket 22 there.
  • the weft 30 is welded to the uppermost and lowermost support rings 56.
  • the fuselage 7 of the special press spindle 6 according to FIG. 6 is circular-cylindrical and tubular in the axial section 24 opposite the screen jacket 22 in the radial direction.
  • the fuselage 7 has a perforation 61 in the compression sections 46, radially opposite axial regions 60.
  • Another perforation 62 is in the fuselage 7 in its axial areas opposite the rear sections 54 in the radial direction 63 provided.
  • the drainage installation 36 is inserted from the right into openings 64 and 65 in the spray jacket 23 and the screen jacket 22.
  • a cross section of a sieve part 67 of the drainage installation 36 according to the exemplary embodiment in FIG. 5 is formed. Openings 38 are also located in the upper part of an inner end wall 66 of the sieve part 67 corresponding to the compression section 46.
  • the screen part 67 of the drainage installation 36 is arranged essentially within the screen jacket 22 and is welded to a holding part 68 of the drainage installation 36 that is rectangular in cross section with the screen part 67.
  • the holding part 68 is made of sheet metal in a box-like manner and has the outlet 40 at the bottom left in FIG. 7 and a passage 69 for press liquid in a bottom surface.
  • the holding part 68 is tightly welded to a cover 71 with an outwardly facing mounting flange 70.
  • the cover 71 and the mounting flange 70 are adapted at right angles to the plane of FIG. 7 of the curvature of the cylindrical spray jacket 23.
  • a flat seal 74 is provided between the mounting flange 70 and an edge of the opening 64 of the spray jacket 23, so that the cover 71 and the mounting flange 70 with the flat seal 74 by screws 72 around the opening 64 are in tight contact with the opposite outer surface of the spray jacket 23 can be pressed.
  • An inner wall 73 of the holding part 68 provided with the outlet 40 is formed at right angles to the plane of the drawing in order to save costs.
  • the flat seal 74 prevents the escape of press liquid between the opening 64 and the holding part 68.
  • a similar seal is at opening 65 not necessary because there is a sufficient gap seal between the opening 65 and the holding part 68.
  • the entire drainage installation 36 can be removed from the shredder press without difficulty for maintenance or repair purposes.
  • FIG. 8 shows in particular the rectangular cross-sectional shape of the holding part 68 and the cross-sectional shape of the cover 71 of the holding part 68, which is also quite angular in the projection.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Paper (AREA)
  • Cephalosporin Compounds (AREA)
  • Seal Device For Vehicle (AREA)
  • Medicines Containing Antibodies Or Antigens For Use As Internal Diagnostic Agents (AREA)
EP82103351A 1981-06-30 1982-04-21 Presse à pulpe Withdrawn EP0069202A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813125653 DE3125653A1 (de) 1981-06-30 1981-06-30 Schnitzelpresse
DE3125653 1981-06-30

Publications (2)

Publication Number Publication Date
EP0069202A2 true EP0069202A2 (fr) 1983-01-12
EP0069202A3 EP0069202A3 (fr) 1983-07-20

Family

ID=6135706

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82103351A Withdrawn EP0069202A3 (fr) 1981-06-30 1982-04-21 Presse à pulpe

Country Status (5)

Country Link
EP (1) EP0069202A3 (fr)
DE (1) DE3125653A1 (fr)
DK (1) DK259282A (fr)
FI (1) FI821705A7 (fr)
NO (1) NO821765L (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004989A1 (fr) * 1987-01-02 1988-07-14 Salzgitter Maschinenbau Gmbh Presse a vis sans fin

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3245620A1 (de) * 1982-12-09 1984-06-14 Grau Feinwerktechnik GmbH & Co, 7926 Böhmenkirch Schneckenpresse
RU2271931C2 (ru) * 2004-03-15 2006-03-20 Мичуринский государственный аграрный университет Шнековый пресс для отжима растительного сырья

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE963230C (de) * 1951-09-18 1957-05-02 Walter Spielvogel Schnitzelpresse

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988004989A1 (fr) * 1987-01-02 1988-07-14 Salzgitter Maschinenbau Gmbh Presse a vis sans fin

Also Published As

Publication number Publication date
DK259282A (da) 1982-12-31
EP0069202A3 (fr) 1983-07-20
FI821705A7 (fi) 1982-12-31
FI821705A0 (fi) 1982-05-14
NO821765L (no) 1983-01-03
DE3125653A1 (de) 1983-01-13

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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Effective date: 19840629

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Inventor name: SCHMIDT, HANS