EP0296184B1 - Presse a vis sans fin - Google Patents
Presse a vis sans fin Download PDFInfo
- Publication number
- EP0296184B1 EP0296184B1 EP87907668A EP87907668A EP0296184B1 EP 0296184 B1 EP0296184 B1 EP 0296184B1 EP 87907668 A EP87907668 A EP 87907668A EP 87907668 A EP87907668 A EP 87907668A EP 0296184 B1 EP0296184 B1 EP 0296184B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- screw press
- spiral screw
- drainage
- press according
- housing
- 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.)
- Expired - Lifetime
Links
Images
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
- 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
- B30B9/262—Permeable casings or strainers means disposed in the casing facilitating the squeezing-out of liquid
Definitions
- the invention relates to a screw press according to the preamble of patent claim 1.
- retainers are arranged in the axial zones 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.
- a hollow spindle body of the press spindle is perforated along its entire length to discharge press liquid from the chip press cake.
- the screw 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 chip press.
- crescent-shaped pick-ups are known per se that can be pivoted about their longitudinal axis, the pointed edge of which can be opposed to the stream of chips.
- Each retainer has a cavity which communicates with the first ring or press space via a series of nozzles in a rear wall of the retainer.
- the nozzles serve to supply heat to the press room, in particular by means of steam, to heat up the pellet mill when starting up.
- the nozzles should also be suitable for discharging liquid that has been squeezed out. However, this appears to be impossible because the nozzles are located in an expansion area of the retainer which decreases in cross-sectional area, in which the adjacent pressed chips expand, ie do not release any liquid, but on the contrary suck in.
- the invention has for its object to increase the performance of the screw press and to improve its dewatering effect.
- the longitudinal axis of the screw press can be arranged vertically (standing) or horizontally (lying) or assume any intermediate inclination.
- the cross-sectional area of the spindle body preferably increases from the inlet side to the outlet side.
- the pitch of the screw blades on the spindle body also preferably decreases from the inlet side to the outlet side and the spindle body is hollow and perforated.
- spacers are attached to the housing in a transverse plane between adjacent screw blades and extend into the pressing space up to the vicinity of the spindle body, insofar as the drainage bodies permit this.
- each drainage body from the spindle body can be equal to its radial distance from the screen jacket.
- the drainage bodies are preferably pointed towards the incoming material to be pressed. This makes it easier to divide the flow of material along the drainage body into layers.
- Each drainage body provides the material to be pressed past it with a considerable additional drainage area. This lies in the interior of the material flow in the press room, that is to say in a material zone which would otherwise be insufficient to drain.
- the arrangement of the dewatering bodies thus contributes significantly to increasing the dry matter in the pressed material and to increasing the performance of the screw press and also allows effective degassing of the material to be pressed.
- the carrier can be pointed against the incoming material to be squeezed, in order to be able to divide the product more easily and to be able to guide it around the carrier.
- a particularly large additional drainage area can be offered if, according to claim 2, the drainage body extends around the entire circumference of the press spindle.
- axial webs of the material to be squeezed remain between the drainage bodies in the circumferential direction. These webs have a certain shear resistance and, in this way, act in a similar way to retainers which prevent the material to be pressed from rotating with the press spindle.
- the design according to claim 4 is structurally favorable.
- the features of claim 5 prevent undesirable evasive movements of the drainage body under the operating stresses.
- each drainage body can be cleaned in a simple manner. This can e.g. with fresh water under a pressure of 3 to 6 bar if there is a risk that the breakthroughs of the drainage body can be caused by deposits or e.g. Add blockages with fibers such as pulp.
- the construction according to claim 7 is structurally simple, wherein the carrier can in turn be pointed towards the incoming goods to be pressed.
- the embodiment according to claim 8 also offers constructive advantages, with the carrier again being able to be pointed against the incoming material to be pressed.
- the distance between the opposite walls can be maintained with simple means even under external pressure from the material to be pressed.
- the features of claim 10 can be used if in the area of drainage s mecanics redesign there should be a risk of rotating the material to be pressed with the press spindle.
- a screw press 1 designed as a pulp press has a housing 2 with a circular cylindrical upper part 3 and a lower part 4, which are screwed together along a plane 5.
- the lower part 4 rests non-rotatably on a stand scaffold 6 and is screwed to it along a plane 7.
- the stand scaffold 6 is attached to a foundation 8 which rests on a floor 9.
- a lid 11 is screwed to the upper part 3 along a plane 10.
- the cover 11 carries an upper bearing 16 which is adjustable with respect to a longitudinal axis 15 of the screw press 1 and in which a stub shaft 17 of a press spindle 18 is rotatably mounted.
- the press spindle 18 is also rotatably mounted in a lower bearing 20 of the lower part 4 in a circumferential direction 43 and can be driven in rotation by a drive device 21 arranged at the bottom in the stand structure 6.
- the upper part 3 of the housing 2 has a spray jacket 22 which is divided into axially successive shots and a screen jacket 23 which is arranged within the spray jacket 22 and is likewise divided into axially successive shots. Between the spray jacket 22 and the screen jacket 23 there is an annular space 24 for discharging liquid which is squeezed out of the sugar beet chips and passes through the screen jacket 23 to the outside through screen holes not shown in FIG. 1.
- the screen jacket 23 is provided with such screen holes from the compressor blades 25 of a spindle body 29 to level 5 (cf. FIGS. 3, 7, 9 and 10).
- receptacles 28 are inserted from the outside into receiving openings of the upper part 3, which extend radially inwards into the vicinity of the spindle body 29 of the press spindle 18.
- the radial extension of the retainers 28 decreases from top to bottom in the same way as the cross-sectional area of the spindle body 29 increases from an upper inlet side 30 of the screw press 1 to its lower outlet side 31.
- the annular space 24 is connected to a drainage device 32 in the lower part 4.
- the pressing space 33 is bounded at the top by a screw-like end wall 38, which is welded tightly on the outside to the screen jacket 23 and also tightly on the inside with an annular wall 34 which is sealed with an annular seal 36 with respect to the spindle body 29.
- the upper part 3 has a rectangular filling opening 41, through which wet chips are filled into the pressing space 33 by a stuffing screw, not shown, arranged horizontally and tangentially.
- the spindle body 29 is also provided with openings 47 for the passage of squeezed liquid only from the compressor blades 25 downwards.
- the spindle body 29 has a cavity 51, into which the openings 47 let liquid pressed through it.
- the cavity 51 is connected to the drainage device 32.
- a bottom socket 55 of the spindle body 29 is connected to an inner ring of the lower bearing and to a telescopic drive tube 58 which extends downwards.
- An upper tube 59 and a lower tube 60 of the drive tube 58 are connected to one another by a tooth coupling 61.
- the down tube 60 is screwed along a plane 62 to a drive connector 63 of the drive device 21.
- the spindle body 29 carries outward, at least approximately in contact with the screen jacket 23 extending screw blades 69, the pitch and axial distance of which decrease from the inlet side 30 to the outlet side 31. After leaving an outlet annular gap 71, the press chips fall into an annular space 72 of the lower part 4, in which clearing vanes 73 rotate. In an annular plate 74 of the lower part 4 there are diametrically opposed discharge openings 75 which each release the press chips into a chute 76.
- the material to be pressed is moved by the press spindle 18 in a transport direction 77 from the inlet side 30 to the outlet side 31.
- the material to be squeezed continuously gives liquid on the one hand into the annular space 24 of the housing 2 and on the other hand into the cavity 51 of the spindle body 29.
- the layers of the material to be pressed, which are adjacent to the screen jacket 23 and the spindle body 29, are dewatered quite well in this way. The extent of drainage decreases from these boundary layers towards the middle of the material to be pressed. In this middle, the liquid and gases have a particularly difficult time reaching the screen jacket 23 or the spindle body 29 through the increasingly compacted material.
- drainage bodies 80 and 81 are provided in axial zones 78 and 79 between adjacent screw vanes 69 or between the lowest screw vanes 69 and level 5 in the pressing chamber 33.
- the worm vane of the press spindle 18 delimiting the axial zone 78 at the bottom in FIG. 1 is not shown because of the fracture line there.
- Each drainage body 80, 81 is of circular cylindrical design and is arranged at a radial distance from both the spindle body 29 and the screen jacket 23.
- Each dewatering body 80, 81 therefore divides the stream of material to be squeezed, which arrives in the transport direction 77, into an inner and an outer partial stream, based on the longitudinal axis 15.
- These partial flows each emit liquid and gases through openings in an inner wall 82 and an outer wall 83 of the drainage bodies 80, 81 into a cavity 84 of the drainage bodies 80, 81.
- These liquids and gases are discharged into the annular space 24 of the housing 2 in a manner to be described later.
- Each drainage body 80, 81 is supported by a number of circumferentially extending, inwardly extending supports 85 of the housing 2. Also at the top of the drainage bodies 80, 81 are radial supports 86 which are fastened to the screen jacket 23 and which stabilize the drainage body 80, 81 in its operating position.
- each carrier 86 is welded between the screen jacket 23 and the outer wall 83 of the drainage body 81.
- Each support 85 seated deeper than the support 86 is welded on the one hand to the outer wall 83 and on the other hand to the screen jacket 23 and an inner surface of the spray jacket 22.
- Fig. 2 also shows a special carrier 87.
- the carrier 87 has a relatively large cross-sectional area and is used in a manner to be described later for the discharge of squeezed-out liquid and gases from the drainage body 81 into the annular space 24. It is also possible to use several such carriers 87 via the The circumference of the housing 2 can be distributed.
- the carrier 87 has a sight glass 88 on the outside.
- a connection line 89 is also passed through the carrier 87 and is connected externally to a flushing fluid source (not shown).
- Fig. 3 the parts of the upper part 3 shown therein are shown in broken lines for clarity.
- the carrier 87 has, outside the spray jacket 22, a mounting flange 90 with which a circular cylindrical front plate 91 is tightly screwed.
- a guide bush 92 is inserted, which receives an outer end of the connecting line 89.
- a further opening 93 in the front plate 91 is sealed by the sight glass 88.
- the connecting line 89 is led through the carrier 87 inwards into the cavity 84 and from there angled up to a flushing line 94.
- the rinsing line 94 is welded to a head rail 95 of the drainage body 81 which is tapered at the top against the transport direction 77 and extends over the entire circumference of the circular cylindrical drainage body 81.
- the inner wall 82 and the outer wall 83 of the drainage body 81 are each tightly welded to the top rail at the top and to the bottom by a foot rail 96 and each provided with openings 97, which inject squeezed liquid and gases into the cavity 84.
- the foot rail 96 is supported on the lower supports 85.
- An upper surface 98 of the foot rail 96 has a slope within the cavity 84 of e.g. 1% up to the special carrier 87.
- the foot rail 96 has reached its deepest point so that its upper surface 98 is aligned with an upper bottom surface 99 of the hollow support 87 in the horizontal direction.
- the bottom surface 99 has an outlet 100 which opens into the annular space 24.
- a cross member 101 is also welded into the carrier 87 for reinforcement within the screen jacket 23.
- the material to be pressed migrates in the transport direction 77 and is split into two circular-cylindrical layers by the drainage body 81, one between the screen jacket 23 and the outer wall 83, and the other between the inner wall 82 and the one shown in FIG. 3 spindle body not shown can be advanced. Liquid and gases are extracted from these circular cylindrical layers on the inside and outside.
- the liquid and any fibers and solids contained therein flow along the upper surface 98 to the at least one special carrier 87, the is tightly welded to an outlet opening 102 of the outer wall 83.
- the liquid or the mixture then flows along the bottom surface 99 through the outlet 100 into the annular space 24, which also discharges the squeezed out liquid and gases which have passed through holes 103 in the screen jacket 23.
- an operator can observe an inner surface 104 of the inner wall 82 and determine whether the openings 97 to be seen there, for example with fiber substances such as pulp or not. If such clogging or clogging of the openings 97 is observed, a pressure fluid, for example fresh water at a pressure of 3 to 6 bar, can be pressed in through the connecting line 89 and from nozzle heads 105 (FIG. 7) distributed over the length of the flushing line 94 (FIG. 7) onto the inner surface 104 and an opposite inner surface 106 of the outer wall 83 are sprayed. It can also be sprayed continuously in this way.
- a pressure fluid for example fresh water at a pressure of 3 to 6 bar
- Fig. 4 shows that the special carrier 87 consists of side walls 107 and 108, which converge roof-like against the transport direction 77 and are tightly connected at their apex by a weld seam 109. Outside, the side walls 107, 108 are tightly welded into a complementary opening of the spray jacket 22 and welded to one another at the bottom by a base 110.
- the essentially rectangular mounting flange 90 is in turn welded to the outside of the spray jacket 22 and, as shown in FIG. 5, is bent in a circular cylindrical manner to complement the spray jacket 22.
- FIG. 6 shows details of the special carrier 87. 6 are indicated by dashed lines in cross-section in square cross-section 111, which are arranged according to FIG. 7 in different axial planes between the inner surfaces 104, 106.
- the spacers 111 are each welded to the inner surface 106.
- the spacers 111 are distributed in the cavity 84 in such a way that the walls 82, 83 of the dewatering body 81 are effectively prevented from being bent into the cavity 84 by the material to be pressed that is passing outside.
- each nozzle head 105 arranged along the flushing line 94 has two nozzles 112 and 113 which are arranged next to one another in the radial direction and spray the flushing fluid onto the entire inner surface 104, 106 in a spray cone 114 and 115, respectively.
- Fig. 7 it can also be seen that there the upper surface 98 of the foot rail 96 relative to the walls 82, 83 is higher than in Fig. 3. This creates the above-mentioned slope, which the flushing out of fiber and solids in the squeezed out Liquid from the cavity 84 is used.
- a retainer 116 is also inserted into the housing 2 from the outside, which extends through the screen jacket 23 into the press chamber 33 up to the vicinity of the outer wall 83.
- Holders 116 of this type are generally not required because the material to be pressed is prevented from rotating with the press spindle 18 by its friction against the screen jacket 23 and the walls 82 and 83. If there is a risk of such a turning in individual cases, retainers 116 can be installed in the required number over the circumference of the housing 2 and, if appropriate, in several axial planes.
- Fig. 8 shows only one half of the housing 2 of the screw press 1.
- the other half not shown, is constructed analogously.
- two drainage bodies 117 are provided at a circumferential distance 118 from one another.
- the material to be pressed is therefore not divided by the drainage bodies 117, but is practically transported as a material web parallel to the longitudinal axis 15.
- These gutters which are distributed over the circumference, have a hold-open function insofar as they prevent or complicate a rotation of the crop with the press spindle (not shown in FIG. 8).
- each drainage body 117 is supplied with flushing fluid through a connection line 119, which at the same time takes on the function of an upper support corresponding to the supports 86. All connecting lines 119 are connected to a flushing fluid source 120 in the form of an outer ring line, which e.g. Fresh water from 3 to 6 bar leads.
- a roof 121 tapered against the transport direction 77 is welded on top of the connecting line 119 in the area of the pressing space 33, which facilitates the division of the crop flow.
- a similar roof 122 is welded on top of the lower support 85 in the area of the pressing space 33.
- the carrier 85 is hollow overall with an interior 123.
- the interior 123 is on the one hand via the outlet 100 with the annular space 24 and on the other hand via an inlet 124 and an opening 125 aligned therewith in the foot rail 96 in constant communication with the cavity 84.
- FIG. 10 illustrates in particular the design of the roofs 121, 122 and the interior 123.
- FIG. 11 shows a schematic illustration of the housing 2 of a twin-screw press 126, the two press spindles of which are not shown in order to simplify the illustration.
- two drainage bodies 127 are provided which have unequal circumferential distances 128 and 129 from one another.
- a peripheral drainage body 130 is mounted in the right part of the housing 2 according to FIG. 11 .
- the drainage bodies 127 could also be brought closer to the drainage bodies 130 or, in the borderline case, could also be designed as a continuous drainage body according to the drainage body 130. Then two continuous drainage bodies 130 would touch.
- dewatering bodies according to the previously described exemplary embodiments can be used in the press room of all known single- or multi-spindle screw presses. In all cases, there is a significant improvement in the dewatering effect and the performance of the screw press.
Landscapes
- Mechanical Engineering (AREA)
- Engineering & Computer Science (AREA)
- Paper (AREA)
- Press Drives And Press Lines (AREA)
- Drying Of Solid Materials (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
- Valve Device For Special Equipments (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
- Gears, Cams (AREA)
- Gear Transmission (AREA)
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT87907668T ATE54605T1 (de) | 1987-01-02 | 1987-11-04 | Schneckenspindelpresse. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19873700016 DE3700016A1 (de) | 1987-01-02 | 1987-01-02 | Spindelpresse |
DE3700016 | 1987-01-02 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0296184A1 EP0296184A1 (fr) | 1988-12-28 |
EP0296184B1 true EP0296184B1 (fr) | 1990-07-18 |
Family
ID=6318382
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP87907668A Expired - Lifetime EP0296184B1 (fr) | 1987-01-02 | 1987-11-04 | Presse a vis sans fin |
Country Status (10)
Country | Link |
---|---|
US (1) | US4941404A (fr) |
EP (1) | EP0296184B1 (fr) |
AT (1) | ATE54605T1 (fr) |
BG (1) | BG48211A3 (fr) |
DD (1) | DD266537A5 (fr) |
DE (3) | DE3700016A1 (fr) |
ES (1) | ES2006255A6 (fr) |
NO (1) | NO883426L (fr) |
WO (1) | WO1988004989A1 (fr) |
YU (1) | YU239887A (fr) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19718502A1 (de) * | 1997-05-02 | 1998-11-05 | Passavant Werke | Einrichtung zur Schlammentwässerung |
DE19940742A1 (de) * | 1999-08-27 | 2001-03-01 | Braunschweigische Maschb Ansta | Verfahren zur mechanischen Entwässerung von insbesondere Rüben-Extraktionsschnitzeln |
DE10010733C2 (de) * | 2000-03-04 | 2002-05-16 | Braunschweigische Maschb Ansta | Siebmantel einer Schnitzelpresse |
KR100755440B1 (ko) * | 2006-06-21 | 2007-09-05 | 김영기 | 착즙주스기 |
DE202010001759U1 (de) * | 2010-02-02 | 2011-06-09 | UTS Biogastechnik GmbH, 85399 | Schneckenseparator |
DE202010001758U1 (de) * | 2010-02-02 | 2011-06-09 | UTS Biogastechnik GmbH, 85399 | Schneckenseparator |
DE202010001765U1 (de) * | 2010-02-02 | 2011-06-09 | UTS Biogastechnik GmbH, 85399 | Schneckenseparator |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE335649C (de) * | 1919-05-16 | 1921-04-07 | Emil Neufeldt | Schnitzelpresse |
DE963230C (de) * | 1951-09-18 | 1957-05-02 | Walter Spielvogel | Schnitzelpresse |
BE559362A (fr) * | 1956-07-24 | |||
DE1846103U (de) * | 1960-10-15 | 1962-02-01 | Weigelwerk G M B H | Spindelsiebpresse. |
DE2364292A1 (de) * | 1973-12-22 | 1975-07-03 | Salzgitter Maschinen Ag | Schnitzelpresse |
JPS56105897A (en) * | 1980-01-29 | 1981-08-22 | Harunobu Miura | Rotary squeezing device |
DE3125653A1 (de) * | 1981-06-30 | 1983-01-13 | Salzgitter Maschinen Und Anlagen Ag, 3320 Salzgitter | Schnitzelpresse |
IT8419501A0 (it) * | 1983-03-23 | 1984-02-08 | Berstorff Gmbh Masch Hermann | Pressa a vite per l'estrazione dell'acqua presentante fessure di separazione per l'estrazione dell'acqua nella quale vengono ottenuti contenuti di materiale secco molto elevati mediante una pressione fino a 500 bar. |
-
1987
- 1987-01-02 DE DE19873700016 patent/DE3700016A1/de active Granted
- 1987-01-02 DE DE8717324U patent/DE8717324U1/de not_active Expired
- 1987-11-04 US US07/272,895 patent/US4941404A/en not_active Expired - Fee Related
- 1987-11-04 EP EP87907668A patent/EP0296184B1/fr not_active Expired - Lifetime
- 1987-11-04 AT AT87907668T patent/ATE54605T1/de not_active IP Right Cessation
- 1987-11-04 WO PCT/EP1987/000671 patent/WO1988004989A1/fr active IP Right Grant
- 1987-11-04 DE DE8787907668T patent/DE3763839D1/de not_active Expired - Fee Related
- 1987-12-28 YU YU02398/87A patent/YU239887A/xx unknown
- 1987-12-29 DD DD87311610A patent/DD266537A5/de not_active IP Right Cessation
- 1987-12-31 ES ES8703773A patent/ES2006255A6/es not_active Expired
-
1988
- 1988-08-02 NO NO883426A patent/NO883426L/no unknown
- 1988-09-26 BG BG85511A patent/BG48211A3/xx unknown
Also Published As
Publication number | Publication date |
---|---|
ES2006255A6 (es) | 1989-04-16 |
DE3700016C2 (fr) | 1988-12-22 |
ATE54605T1 (de) | 1990-08-15 |
WO1988004989A1 (fr) | 1988-07-14 |
DE3763839D1 (de) | 1990-08-23 |
NO883426D0 (no) | 1988-08-02 |
US4941404A (en) | 1990-07-17 |
EP0296184A1 (fr) | 1988-12-28 |
YU239887A (en) | 1988-10-31 |
BG48211A3 (en) | 1990-12-14 |
DE3700016A1 (de) | 1988-07-28 |
DE8717324U1 (fr) | 1988-09-15 |
DD266537A5 (de) | 1989-04-05 |
NO883426L (no) | 1988-08-02 |
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