CN204249388U - Screw extruder - Google Patents
Screw extruder Download PDFInfo
- Publication number
- CN204249388U CN204249388U CN201420380743.1U CN201420380743U CN204249388U CN 204249388 U CN204249388 U CN 204249388U CN 201420380743 U CN201420380743 U CN 201420380743U CN 204249388 U CN204249388 U CN 204249388U
- Authority
- CN
- China
- Prior art keywords
- screw extruder
- spiral
- helical axis
- supporting mass
- ceramic component
- 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 - Fee Related
Links
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
- B30B9/121—Screw constructions
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Treatment Of Sludge (AREA)
- Press-Shaping Or Shaping Using Conveyers (AREA)
Abstract
The utility model relates to a kind of screw extruder for separating liquid from the suspension of especially mud or fibrous suspension, the helical axis (2) that this screw extruder rotates in cylindrical or conical overcoat (1) with at least one, suspension is conducted through the annular gap (4) be formed between overcoat (1) and helical axis (2) by the spiral (3) of helical axis (2), wherein at least overcoat (1) or helical axis (2) are perforation and spiral (3) has the matrix (5) that is connected with helical axis (2) and is configured to multi-piece type, it is characterized in that, the front side towards throughput direction (6) of spiral (3) is at least formed primarily of ceramic component (7), ceramic component is fixed on the supporting mass (8) of spiral (3), front side and spiral (3) towards overcoat upside between form cutting seamed edge (9), and cover supporting mass (8) at least partially in upside from cutting seamed edge (9).
Description
Technical field
The utility model relates to a kind of screw extruder for separating liquid from the suspension of especially mud or fibrous suspension, the helical axis that this screw extruder rotates in cylindrical or conical overcoat with at least one, suspension is conducted through the annular gap be formed between overcoat and helical axis by this spiral axial screw, and wherein at least overcoat or helical axis are perforation and spiral has the matrix that is connected with helical axis and is configured to multi-piece type.
Background technology
This kind equipment be known for a long time and be successfully used in manufacture web of fiber machine in be particularly useful for fibrous suspension thickening.
At this, usual driven conveying worm is arranged in thin plate cover of substantially concentric columniform or conical punching etc.The suspension that radial direction provides cooperates dehydrated with blocking device, wherein water can be overflowed by the thin plate cover etc. of punching, and residue remains.
If select conical shape for thin plate cover and make its diameter reduce on residue traffic direction, then improve thickening and the dehydration of residue, wherein certainly outside worm screw diameter must geometrical relationship mate therewith.
If known dehydration worm screw constructs as mentioned above, then this dehydration worm screw is subject to king-sized wearing and tearing due to the strong friction between residue and machine part.Namely between the material and parts of obviously thickening, there is obvious relative motion and occur very large axis and radial load simultaneously.In addition, this residue often has little metallic member and hard unit of plastic except having fiber residue, even this rule of thumb causes for high-quality metal parts, and the especially large wearing and tearing of spiral.
Summary of the invention
Therefore, technical problem to be solved in the utility model is the running time by extending screw extruder for the improvement of helical abrasion-proof.
According to the utility model, this technical problem solves in the following way, the front side towards throughput direction of spiral is at least formed primarily of ceramic component, this ceramic component is fixed on the supporting mass of spiral, front side and spiral towards overcoat upside between form cutting seamed edge, and cover supporting mass at least one part of upside from cutting seamed edge.
Ceramic component is very wear-resisting, which substantially increases the service time of spiral.Cutting seamed edge self is also formed by ceramic component and therefore ensures at the temporal constant density of material of whole service.
Therefore, the angle that seamed edge should form 75 ° to 90 ° between front side and upside is cut.The angle of less than 90 ° can be implemented to the transition of the low friction of supporting member, but wherein answers stability of attention.
In addition, due to supporting mass on upside capped prevent supporting mass with the wearing and tearing on the contact surface of ceramic component.
When supporting mass is formed by matrix self, have and especially simply construct.
Certainly, if supporting mass to be arranged between matrix and ceramic component and be preferably removably fixed on matrix, then to achieve and mate with the better of the specific tasks of element.Dismountable connection is usually undertaken by bolt and is achieved the simple replacing of supporting mass when needed.
The matrix welded with helical axis is made of metal usually, and supporting mass should advantageously be formed by fiber strengthened plastics.The elasticity of matrix related to this can stop the compression shock on ceramic component, and also realizes the connection of the form fit that such as by dovetail connected of ceramic component on supporting mass.
In addition, supporting mass should have deformable pad on the downside of helical axis, described pad when supporting member is fixed on matrix in the side of helical axis upwardly and therefore create prestressing force.
For protection as far as possible be all sidedly subject to top load, the front side towards throughput direction of spiral is not frayed, ceramic component should except having with helical axis the whole front side forming spiral except little annular gap.
In order to the anti abrasive structure of the upside at spiral, the upside of spiral 1/3, preferably at least half should be formed by ceramic component, and/or ceramic component extends at least 10mm from cutting seamed edge against throughput direction, preferably extends at least 15mm.
In addition, the scheme making the load of supporting mass on upside reduce is that the distance between upside that formed by supporting mass, spiral and the axis of helical axis reduces against throughput direction.
Accompanying drawing explanation
The utility model is explained in detail hereinafter according to embodiment.Each figure is in the accompanying drawings:
Fig. 1 is the schematic cross-section by screw extruder;
Fig. 2 is the partial view of the front side of spiral 3, and
Fig. 3 a to Fig. 3 e is the cross section of the different spiral 3 by helical axis 2.
Detailed description of the invention
Screw extruder be in FIG used for by often at least in part by old paper formed as the manufacture of the fiber suspension fluid dewatering needed for web of fiber.
For this reason, screw extruder have be arranged in one heart columniform and in the overcoat 1 of perforation and the helical axis 2 rotatably supported, wherein suspension presses to outlet 14 by the annular gap 4 formed between overcoat 1 and helical axis 2 from least one entrance 13 from the spiral 3 of helical axis 2.
Suspension dewaters by gravity and by the compression occurred when transporting when flowing through annular gap 4.At this, water is flow in the dewatering box with outlet 15 by the sieve aperture of overcoat 1.This dewatering box have collected the water of catching and this be such as incorporated into surround overcoat 1 housing 16 in.
For strengthen dewatering, helical axis 2 is formed as conical and is arranged to, and annular gap 4 is reduced gradually on throughput direction 6.
After passing through annular gap 4, concentrated suspension arrives in the region of outlet 14.
Helical axis 2 is driven by motor 17, wherein can connect speed changer, driving-belt etc. betwixt.
Different from shown in Fig. 1, screw extruder also tiltable or vertically arrange.
For realizing the very anti abrasive spiral 3 of helical axis 2, according to Fig. 2 and Fig. 3 a to Fig. 3 e, this spiral structure is multi-piece type.Metal and the matrix 5 welded with helical axis 2 to be connected on the throughput direction 6 of helical axis 2 with matrix 5 by the fixing supporting mass 8 be made up of fiber strengthened plastics of bolt 18.
This supporting mass 8 has deformable pad 10 on the downside towards helical axis 2, and described pad 10 is pressed together when supporting mass 8 is bolted together on matrix 5, and therefore ensure that the reliable assembling condition of supporting mass 8.
For improving the running time of spiral 3, the front side towards throughput direction 6 of spiral 3 is formed by ceramic component 7 except having except very narrow annular gap 11 with helical axis 2.
Ceramic component 7 is connected at this by dovetail jockey and supporting mass 8 form fit and is additionally also bonded with it.In addition, bond in the gap preventing suspension from entering between ceramic component 7 and supporting mass 8.
By ceramic component 7 also create front side and towards the spiral 3 of overcoat 1 upside between very anti abrasive cutting seamed edge 9.
This cutting seamed edge 9 defines the angle of 90 ° in Fig. 3 a, Fig. 3 b, Fig. 3 d and Fig. 3 e between front side and upside, and this allows the stable structure of ceramic component 7.
In fig. 3 a, the upside of ceramic component 7 is flatly transitioned into supporting mass 8.The sudden change of the distance between the upside of the spiral 3 formed by supporting mass 8 and the axis 12 of helical axis 2 is avoided by means of only the distance that flatly transition is enough.Therefore, the support of ceramic component 7 in upper area is improved.
In contrast, in Fig. 3 e, the distance of the upside of supporting mass 8 and the axis 12 of helical axis 2 reduces to carry out continuously, and this weakens the support of ceramic component 7 slightly, but improves transient condition.
When Fig. 3 d shows the transition between ceramic component 7 and supporting mass 8, the reduction of the distance sudden change between the axis 12 of upside and helical axis 2.
Different with it, in Fig. 3 b and Fig. 3 c, distance between the upside of ceramic component 7 and the axis 12 of helical axis 2 reduces completely continuously, namely with the angle of about 80 ° between front side and upside reduce (Fig. 3 c) or continuously ceramic component 7 against in the end regions of throughput direction 6 reduce (Fig. 3 b).
In addition, ceramic component 7 extends at least 10mm from cutting seamed edge 9 against throughput direction 6, this achieves and cover supporting mass 8 in a part for upside from cutting seamed edge 9.This also makes upside be anti abrasive, and prevents supporting mass 8 and the wearing and tearing in the contact area of ceramic component 7.
Claims (12)
1. one kind for from suspension, especially the screw extruder of separating liquid in mud or fibrous suspension, the helical axis (2) that this screw extruder rotates in cylindrical or conical overcoat (1) with at least one, suspension is conducted through the annular gap (4) be formed between overcoat (1) and helical axis (2) by the spiral (3) of described helical axis (2), wherein at least described overcoat (1) or described helical axis (2) are perforation and described spiral (3) has the matrix (5) that is connected with described helical axis (2) and is configured to multi-piece type, it is characterized in that, the front side towards throughput direction (6) of described spiral (3) is at least formed primarily of ceramic component (7), described ceramic component is fixed on the supporting mass (8) of described spiral (3), described front side and described spiral (3) towards overcoat upside between form cutting seamed edge (9), and cover described supporting mass (8) at least partially in described upside from described cutting seamed edge (9).
2. screw extruder according to claim 1, is characterized in that, described supporting mass (8) is formed by described matrix (5).
3. screw extruder according to claim 1, it is characterized in that, described supporting mass (8) to be arranged between matrix (5) and ceramic component (7) and to be preferably fixed on removably on described matrix (5).
4. screw extruder according to claim 3, is characterized in that, described supporting mass (8) is made up of fiber strengthened plastics.
5. the screw extruder according to claim 3 or 4, is characterized in that, described supporting mass (8) has deformable pad (10) on the downside towards described helical axis (2).
6. according to the screw extruder one of Claims 1-4 Suo Shu, it is characterized in that, described ceramic component (7) form fit formula is fixed on described supporting mass (8) with connecting.
7. according to the screw extruder one of Claims 1-4 Suo Shu, it is characterized in that, described ceramic component (7) is except having with described helical axis (2) the whole front side forming described spiral (3) except little annular gap (11).
8. according to the screw extruder one of Claims 1-4 Suo Shu, it is characterized in that, described cutting seamed edge (9) forms the angle of 90 ° between front side and upside.
9. according to the screw extruder one of Claims 1-4 Suo Shu, it is characterized in that, described cutting seamed edge (9) forms the angle being less than 90 ° between front side and upside, the angle between being preferably 75 ° to 90 °.
10. according to the screw extruder one of Claims 1-4 Suo Shu, it is characterized in that, 1/3 of the upside of described spiral (3), preferably at least half is formed by ceramic component (7).
11., according to the screw extruder one of Claims 1-4 Suo Shu, is characterized in that, described ceramic component (7) extends at least 10mm from described cutting seamed edge (9) against throughput direction (6), preferably extends at least 15mm.
12. according to the screw extruder one of Claims 1-4 Suo Shu, it is characterized in that, the distance between the upside of the spiral (3) formed by described supporting mass (8) and the axis (12) of described helical axis (2) reduces against throughput direction (6).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102013213668.4 | 2013-07-12 | ||
| DE102013213668 | 2013-07-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204249388U true CN204249388U (en) | 2015-04-08 |
Family
ID=51868632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420380743.1U Expired - Fee Related CN204249388U (en) | 2013-07-12 | 2014-07-10 | Screw extruder |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN204249388U (en) |
| AT (1) | AT14550U1 (en) |
| FI (1) | FI10647U1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109476107A (en) * | 2016-07-29 | 2019-03-15 | 安德里茨股份公司 | Screw extruder |
| EP4309797A1 (en) | 2022-07-20 | 2024-01-24 | Alfa Laval Corporate AB | Wear assembly for a helically formed, metal decanter screw conveyor |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2028157B1 (en) * | 2021-05-06 | 2022-11-23 | Nijhuis Water Tech B V | Sealing system for an apparatus for conveying and/or separating matter |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4214217A1 (en) * | 1992-04-30 | 1993-11-04 | Fan Engineering Gmbh | Wearing elements attachment device to liq.-solid screw press separator screws - comprises wearing elements in form of angles shaped to suit and attached to screw vanes and tapering to screw axis, for waste paper residue and cattle slurry |
| NO178567C (en) * | 1994-02-01 | 1996-04-24 | Dag Ommundsen | Wear element for screw presses and the like. |
| US5429581A (en) * | 1994-03-07 | 1995-07-04 | Dorr-Oliver Incorporated | Wear-resistant tile surfacing for a centrifuge conveyor |
| NO985381L (en) * | 1998-11-19 | 2000-05-22 | Pulping As Kvaerner | Procedure for creating worn screw wings in a screw press |
| AT503589B1 (en) * | 2006-05-08 | 2009-06-15 | Andritz Ag Maschf | CARRIER WITH WEARING PARTS FOR SCREW PRESSES |
-
2014
- 2014-06-02 AT ATGM50083/2014U patent/AT14550U1/en not_active IP Right Cessation
- 2014-07-10 FI FIU20144168U patent/FI10647U1/en not_active IP Right Cessation
- 2014-07-10 CN CN201420380743.1U patent/CN204249388U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109476107A (en) * | 2016-07-29 | 2019-03-15 | 安德里茨股份公司 | Screw extruder |
| EP4309797A1 (en) | 2022-07-20 | 2024-01-24 | Alfa Laval Corporate AB | Wear assembly for a helically formed, metal decanter screw conveyor |
| WO2024017615A1 (en) | 2022-07-20 | 2024-01-25 | Alfa Laval Corporate Ab | Wear assembly for a helically formed, metal decanter screw conveyor |
Also Published As
| Publication number | Publication date |
|---|---|
| FI10647U1 (en) | 2014-10-10 |
| AT14550U1 (en) | 2016-01-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150408 Termination date: 20160710 |