ITLU20080011A1 - COMPACT SCREW (PRESS SCREEN) TO FILTER AND DROP OUT WASTE WATER WASTE - Google Patents
COMPACT SCREW (PRESS SCREEN) TO FILTER AND DROP OUT WASTE WATER WASTEInfo
- Publication number
- ITLU20080011A1 ITLU20080011A1 IT000011A ITLU20080011A ITLU20080011A1 IT LU20080011 A1 ITLU20080011 A1 IT LU20080011A1 IT 000011 A IT000011 A IT 000011A IT LU20080011 A ITLU20080011 A IT LU20080011A IT LU20080011 A1 ITLU20080011 A1 IT LU20080011A1
- Authority
- IT
- Italy
- Prior art keywords
- press
- screen
- screw
- filter
- machine
- Prior art date
Links
- 239000002351 wastewater Substances 0.000 title claims 2
- 239000002699 waste material Substances 0.000 title description 7
- 238000004140 cleaning Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims 1
- 239000003643 water by type Substances 0.000 claims 1
- 239000000463 material Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 229920003043 Cellulose fiber Polymers 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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
- B30B9/16—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 operating with two or more screws or worms
- B30B9/166—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 operating with two or more screws or worms the screws being coaxially disposed in the same chamber
Description
DESCRIZIONE DEL TROVATO DESCRIPTION OF THE FOUND
NOME DEL TROVATO NAME OF THE FOUND
Vite Compattatrìce ( Press Screen J Compacting screw (Press Screen J
IL PROBLEMA TECNICO COSTRUTTIVO THE TECHNICAL CONSTRUCTION PROBLEM
In cartiera operano delle macchine dette selettori di testa e primarie di pulizia che separano scarti ed impurità dalla pasta contenente fibre di cellulosa Le acque che escono da queste macchine contengono gii scarti ed impurità che sono stati separati ed ovviamente anche del materiale ancora utile. In the paper mill there are machines called head selectors and primary cleaning machines that separate waste and impurities from the pulp containing cellulose fibers. The water that comes out of these machines contains the waste and impurities that have been separated and obviously also some material that is still useful.
Si pone il problema del recupero dell’acqua di processo, del recupero delle fibre dì cellulosa residue in essa contenute della raccolta finale dei materiali di scarto. The problem arises of the recovery of process water, of the recovery of residual cellulose fibers contained in it and of the final collection of waste materials.
Le acque filtrate e le fibre di cellulosa recuperate vengono reimmesse nel processo. ì materiali di scarto raccolti vengono eliminati conferendoli a discarica oppure utilizzandoli in un termovalorizzatore: in ambedue i casi è economicamente utile che tali materiali di scarico siano il più possibile portati a grado di secco elevato. The filtered water and the recovered cellulose fibers are returned to the process. The collected waste materials are eliminated by sending them to landfills or by using them in a waste-to-energy plant: in both cases it is economically useful for these waste materials to be brought to a high degree of dryness as much as possible.
problema tecnico sopra descritto viene attualmente risolto da linee di tratamento che consistono in macchinari collegati in serie; per alte portate, un vaglio rotante a sollevamento, un vibrovaglio ed una pressa a vite; per portate minori, un vibrovaglio ed una pressa a vite. technical problem described above is currently solved by treatment lines which consist of machines connected in series; for high flow rates, a rotating lifting screen, a vibrating screen and a screw press; for smaller capacities, a vibrating screen and a screw press.
Le soluzioni atualmente adottate sono efficaci ma le linee che la attuano sono ingombranti, sìa per area che per volume occupati, costose e rumorose The solutions currently adopted are effective but the lines that implement them are bulky, both by area and by volume occupied, expensive and noisy
Il presente trovato propone una soluzione nuova al problema sopra descritto Tale soluzione è molto compatta, riducendo di conseguenza l'ingombro della linea di pulizia; più economica; meno rumorosa in quanto elimina l uso dei vibrovaglio; si presenta quindi come vantaggiosa rispetto alla tecnologia atualmente In uso. The present invention proposes a new solution to the problem described above. This solution is very compact, consequently reducing the size of the cleaning line; cheaper; less noisy as it eliminates the use of vibrating screens; it therefore presents itself as advantageous with respect to the technology currently in use.
LA SOLUZIONE DEL PROBLEMA DESCRIZIONE DEL TROVATO THE SOLUTION TO THE PROBLEM DESCRIPTION OF THE FOUND
Il trovato innova il processo di trattamento degli scarti provenienti dalle macchine primarie di pulizia in una cartiera. Il cuore di tate processo consiste attualmente In due macchine poste in serie: un vibrovaglio ed una pressa a vite. Il vibrovaglio riceve tipicamente uno scarico con densità intorno all' 1% e porta tale densità a circa 10%; con questa densità, il vibrovaglio alimenta una pressa a vite a passo decrescente che. a sua volta, porta tale densità circa al 50%. The invention innovates the process of treating the scraps coming from the primary cleaning machines in a paper mill. The heart of the process currently consists of two machines placed in series: a vibrating screen and a screw press. The vibrating screen typically receives a discharge with a density of around 1% and brings this density to around 10%; with this density, the vibrating screen feeds a screw press with decreasing pitch which. in turn, it brings this density to about 50%.
Questo livello di addensamento degli scarti è atualmente considerato come sufficiente per loro conferimemo a discarica o ad un termovalorizzatore This level of thickening of waste is currently considered as sufficient for them to be sent to a landfill or a waste-to-energy plant
Il trovato consiste nell’uso, al posto e con la funzione del vibrovaglio, di una vite a passo costante mossa da un motore a velocità variabile The invention consists in the use, instead and with the function of the vibrating screen, of a constant pitch screw moved by a variable speed motor
Ed è caratterizzato dall abbìnamento m una stessa macchina di tale vite a passo costante con la vite compattatrìce a passo decrescente. And it is characterized by the combination in the same machine of this constant pitch screw with the decreasing pitch compacting screw.
Propone quindi, a parità circa dì prestazioni, l'uso di una macchina al posto di due; con grossi vantaggi in termini di ingombro, efficacia tecnologica, rumorosità e costo. It therefore proposes, with approximately equal performance, the use of one machine instead of two; with big advantages in terms of size, technological effectiveness, noise and cost.
Allo scopo di meglio chiarire la soluzione nuova al problema tecnico sopra descritto, si presentano in seguito gli schemi costruttivi di due macchine che attuano il trovato: la prima, denominata per comodità Press Screen, la seconda Roto Screen ( le denominazioni in lingua inglese danno una descrizione sintetica immediata delle funzioni essenziali di tali macchine). In order to better clarify the new solution to the technical problem described above, the construction diagrams of two machines that implement the invention are presented below: the first, called for convenience Press Screen, the second Roto Screen (the names in English give a immediate brief description of the essential functions of these machines).
I due esempi sono presentati al solo fine di mostrare due applicazioni particolari dell'idea, che non ne viene quindi limitata e ridotta nella sua generalità. The two examples are presented for the sole purpose of showing two particular applications of the idea, which is therefore not limited and reduced in its generality.
Press Screen, mostrata in tavola A ha una capacità operativa fino a circa 400 litri ai minuto su materiale con densità di circa 1%. Press Screen, shown in table A, has an operating capacity up to about 400 liters per minute on material with a density of about 1%.
II materiale entra nella macchina dalla cassa di alimentazione 1 ; viene portato ad una densità di circa il 10% dalla vite a passo costante 2 mossa dal motore a velocità variabile 3; l'acqua filtrata di primo drenaggio esce dalla macchina in 4 . Il materiale addensato alimenta di testa la vite 5, a passo variabile mossa dal motore a velocità costante 6, che io compatta e lo porta al pressore 7, Lo scarico dell’ acqua di spremitura avviene in 8 e lo scarico del materiale addensato a circa il 50% avviene in 9. The material enters the machine from the feed box 1; it is brought to a density of about 10% by the constant pitch screw 2 moved by the variable speed motor 3; the filtered water of the first drain leaves the machine in 4. The thickened material head feeds the screw 5, with variable pitch moved by the constant speed motor 6, which I compact and brings it to the presser 7, The squeezing water is discharged in 8 and the thickened material is discharged to 50% happens in 9.
Roto Screen, mostrata in tavola B ha una capacità operativa fino a circa 2500 litri al minuto . Consiste in un primo stadio di addensamento costituito da una coclea - filtro a sollevamento 1 e da un secondo stadio costituito da una macchina Press Screen 2. Roto Screen, shown in table B, has an operating capacity of up to about 2500 liters per minute. It consists of a first thickening stage consisting of an auger - lifting filter 1 and a second stage consisting of a Press Screen 2 machine.
il primo stadio ha la funzione di accrescere la densità del materiale fino a circa 1% e ridurne la portata fino a circa 400 litri al minuto, in modo da rientrare nei limiti di capacità delia seconda macchina. L’alimentazione della macchina avviene in 3; lo scarico dell'acqua filtrata di primo drenaggio avviene in 5, lo scarico del materiale addensato a circa il 50 % avviene in 6. the first stage has the function of increasing the density of the material up to about 1% and reducing the flow rate up to about 400 liters per minute, so as to be within the capacity limits of the second machine. The machine is powered by 3; the first drainage of the filtered water takes place in 5, the discharge of the material thickened to about 50% takes place in 6.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000011A ITLU20080011A1 (en) | 2008-08-01 | 2008-08-01 | COMPACT SCREW (PRESS SCREEN) TO FILTER AND DROP OUT WASTE WATER WASTE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT000011A ITLU20080011A1 (en) | 2008-08-01 | 2008-08-01 | COMPACT SCREW (PRESS SCREEN) TO FILTER AND DROP OUT WASTE WATER WASTE |
Publications (1)
Publication Number | Publication Date |
---|---|
ITLU20080011A1 true ITLU20080011A1 (en) | 2010-02-02 |
Family
ID=42077285
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT000011A ITLU20080011A1 (en) | 2008-08-01 | 2008-08-01 | COMPACT SCREW (PRESS SCREEN) TO FILTER AND DROP OUT WASTE WATER WASTE |
Country Status (1)
Country | Link |
---|---|
IT (1) | ITLU20080011A1 (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB886015A (en) * | 1957-03-19 | 1962-01-03 | Rose Downs & Thompson Ltd | An improved screw press |
US3034421A (en) * | 1959-11-24 | 1962-05-15 | St Joseph Lead Co | Apparatus for densifying bulky powders |
US3143956A (en) * | 1962-06-13 | 1964-08-11 | Fmc Corp | Control system for a press |
US3548743A (en) * | 1968-03-07 | 1970-12-22 | Chemetron Corp | Liquid expressing press |
US4117776A (en) * | 1977-02-25 | 1978-10-03 | The French Oil Mill Machinery Company | Screw press apparatus |
-
2008
- 2008-08-01 IT IT000011A patent/ITLU20080011A1/en unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB886015A (en) * | 1957-03-19 | 1962-01-03 | Rose Downs & Thompson Ltd | An improved screw press |
US3034421A (en) * | 1959-11-24 | 1962-05-15 | St Joseph Lead Co | Apparatus for densifying bulky powders |
US3143956A (en) * | 1962-06-13 | 1964-08-11 | Fmc Corp | Control system for a press |
US3548743A (en) * | 1968-03-07 | 1970-12-22 | Chemetron Corp | Liquid expressing press |
US4117776A (en) * | 1977-02-25 | 1978-10-03 | The French Oil Mill Machinery Company | Screw press apparatus |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2290972C (en) | Device for dehydrating and washing suspensions of fibrous material | |
EP1817453A1 (en) | Method for degassing and supplying a fibrous suspension to a headbox or a filter device, and degassing device | |
CN210845534U (en) | Physical pulp extruding and filtering device | |
GB2061133A (en) | Treatment of waste paper | |
ITLU20080011A1 (en) | COMPACT SCREW (PRESS SCREEN) TO FILTER AND DROP OUT WASTE WATER WASTE | |
WO2005108314A1 (en) | Procedure for dewatering of suspensions | |
EP1798331A1 (en) | Process for dispersing pulp | |
US20130001151A1 (en) | Pressure filter | |
SE0602268L (en) | Washing press comprising separation of filtrate | |
CN216261184U (en) | Metal material processing metal fillings processing apparatus | |
CN101161928B (en) | Bleaching process for broussonetia papyrifera white bast bio-pulp | |
ATE323189T1 (en) | METHOD FOR DISSOLVING AND CLEANING PAPER FIBER RAW MATERIALS CONTAINING CONTRARY SUBSTANCES, IN PARTICULAR WASTE PAPER | |
CN114293285A (en) | Cotton yarn processing is with scattering blowing equipment fast | |
FI72354B (en) | FOERFARANDE FOER FRAMSTAELLNING AV FOERBAETTRAD SLIPMASSA. | |
CN106283801A (en) | A kind of integration paper pulping bleaching and process for purifying waste water | |
JP2012523503A (en) | Press device for dewatering suspension | |
BR112016019965B1 (en) | VERTICAL SCREW PRESS FOR SOLID SEPARATION | |
WO2014135335A1 (en) | Fibrous material preparation | |
EP0887458A1 (en) | Process to suspend and clean a paper stock containing contaminants | |
CN216378919U (en) | Pulp pressure screen for papermaking | |
CN219908381U (en) | Paper pulp deslagging equipment for paper product manufacturing | |
CN210634160U (en) | Double-screw squeezer for producing viscose fibers | |
EP1392913B1 (en) | Method and apparatus for recovering fibre and fibre-based solids from a filtrate of the mechanical or chemi-mechanical wood pulp industry, said filtrate containing both solids and lipophilic extractive material | |
ITVI20000273A1 (en) | MACHINE FOR WASHING CELLULOSE FIBER | |
DE102006062236A1 (en) | Apparatus for producing a fibrous web |