CA1083395A - Stock pulper installation having a stock pulper for pulping and sorting waste paper - Google Patents
Stock pulper installation having a stock pulper for pulping and sorting waste paperInfo
- Publication number
- CA1083395A CA1083395A CA315,220A CA315220A CA1083395A CA 1083395 A CA1083395 A CA 1083395A CA 315220 A CA315220 A CA 315220A CA 1083395 A CA1083395 A CA 1083395A
- Authority
- CA
- Canada
- Prior art keywords
- stock
- pulper
- separation device
- outlet opening
- installation
- 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
Links
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/34—Kneading or mixing; Pulpers
- D21B1/345—Pulpers
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
- D21D5/22—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in apparatus with a vertical axis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Abstract
INVENTOR: ALBRECHT KAHMANN
INVENTION: STOCK PULPER INSTALLATION HAVING A STOCK PULPER
FOR PULPING AND SORTING WASTE PAPER
ABSTRACT OF THE DISCLOSURE
A stock pulper installation containing a stock pulper for pulping and sorting waste paper, comprising a container for the reception of a stock suspension which is pretreated in a pulper or stock slusher. Within the con-tainer a rotor moves along a sieve, behind which there is located an outlet for good stock. The stock pulper has an outlet opening for light weight contaminants or impurities which are to be separated and an outlet opening for heavy weight contaminants or impurities which are to be separated.
At the outlet opening for the heavy weight contaminants there is connected a separation device for separating the heavy weight contaminants, this separation device having a motor driven rotor for producing a centrifugal action.
INVENTION: STOCK PULPER INSTALLATION HAVING A STOCK PULPER
FOR PULPING AND SORTING WASTE PAPER
ABSTRACT OF THE DISCLOSURE
A stock pulper installation containing a stock pulper for pulping and sorting waste paper, comprising a container for the reception of a stock suspension which is pretreated in a pulper or stock slusher. Within the con-tainer a rotor moves along a sieve, behind which there is located an outlet for good stock. The stock pulper has an outlet opening for light weight contaminants or impurities which are to be separated and an outlet opening for heavy weight contaminants or impurities which are to be separated.
At the outlet opening for the heavy weight contaminants there is connected a separation device for separating the heavy weight contaminants, this separation device having a motor driven rotor for producing a centrifugal action.
Description
~g~339S
BACKGROOUND OF THE INVENTION
: , The present invention relates to a new and improved construction of a stock pulper installation having a stock pulper for pulping and sorting waste paper.
The stock pulper installation of the invention is of the type wherein the stock pulper comprises a container for receiving a stock suspension which has been pretreated in a pulper or stock slusher. In the container a rotor is movable along a sieve or screen behind which there is located an outlet for good stock. The stock pulper has an outlet opening for light contaminants, also referred to as light weight contaminants or impurities, which are to be separated and an outlet opening for heavy contaminants, also referred to as heavy weight contaminants or impurities, which are to be separated.
A stock pulper of this type is disclosed, by way of example, in the commonly assigned, United States Patent 3,942,728, granted March 9, 1976. With state-of-the-art stock pulpers there was connected, as a general rule, at the outlet for the heavy contaminants to be separated a sluice which had to be periodically opened.
'.'.
~8339~ ``
It has been found that in the presence of a -~
great deal of heavy contaminants, or also for operational --reasons, the withdrawal o~ the heavy contaminants from the related outlet opening can be accomplished continuously, or, in the case of automatically arising, regular interruptions periodically.
Therefore, for this purpose there has been proposed according to United States Patent No. 4,017,033, granted April 12, 1977 and corresponding to West German , -Patent Publication No. 2,514,162, connecting a hydrodyclone -with the outlet opening for the heavy contaminants and in which there are separated the heavy contaminants, whereas the stock suspension freea of the contaminants is fed back again into the installation for the processing of the waste paper. With this prior art installation however there i5 present the drawback that, in order to ensure for a somewhat successful operation of the hydrocyclone, the stock pulper must be operated at an extremely high pressure, something disadvantageous not only for reasons of energy consumption.
On the other hand, if there is arranged a pump between the stock pulper and the hydrocyclone then this pump is exposed to pronounced wear due to the heavy particles which are separated.
SU~$~RY OF THE INVENTION
Therefore, with the foregoing in mind it is a primary object of the present invention to provide an im-proved construction of stock pulper installation which is not associated with the aforementioned drawbacks and limit-ations of the prior art proposals.
;~' ' Another and more specific object of the present invention aims at the provision of a new and improved con-struction of stock pulper installation which overcomes the aforementioned shortcomings and wherein there is possible a faultless separation of the heavy contaminants effluxing from the stock pulper independent of the pressure conditions prevailing in the stock pulper.
- The apparatus of the present invention which allows achieving these objectives is manifested by the features that, a separation device for separating the heavy contamin-ants is connected with the outlet opening for the heavy contaminants, this separation device containing a motor driven rotor for producing a centrifugal action or effect.
With such type separation device the motor driven rotor generates the turbulent movement or vortex flow leading to the formation of the requisite centrifugal action,without _ 4 ~' ;
~083395 any dependency upon the pressure prevailing in the stock pulper and independent of the flo~ velocity of the liquid or suspension flowing from the stock pulper to the separation device. Additionally, the centrifugal action is also ex-tensively independent of the density of the stock suspension effluxing from the outlet opening for the heavy contaminants.
.,.~, ., Preferably, the rotor of the separation device can be simultaneously structured in the manner of a pump impeller and is suitable for conveying the stock suspension out of the separation device. Such type separation device has been disclosed, by way of example, in British Patent No. 1,465,888. Due to such type design of the separation device there is augmented the flow of the stock suspension out of the separation device, so that in a great many in-stances there is not required any special pump for further conveying.
;.'.
The outlet of the separation device or separator can be connected with the inlet line or conduit of the stock pulper. In this way there is realized a particularly simple construction of the inventive stock pulper installation.
~0~3339S
sRIEF DESCRIPTION OF THE DRA~ING
The invention will be better understood and objects other than those set forth.above, will become apparent when `
consideration is given to the following detailed description ;-thereof. Such description makes reference to the annexed drawing wherein the single Figure schematically illustrates .
an exemplary embodiment of inventive stock pulper installation forming part of an installation for processing waste paper.
DETAILED DESCRIPTION OF THE PREFERRED EM~30DIMENTS
Describing nQW the drawing, the stock pulper in-stallation shown by way of example therein, will be seen to comprise a stock pulper 1 which, as already mentioned, can be designed in the manner as taught in the aforementioned commonly assigned, United States Patent No. 3,942,728, granted March 9, 1976. This stock pulper 1 embodies a container 2 to which there is delivered a stock suspension, which has been pre ;.
treated in a conventional stock slusher or pulper 3, by ;~
means of an inlet line 4 equipped with a pump 5. The inlet line or conduit 4 leads to a tangential inlet opening 6 of the container 2. Within the container 2 th.ere is rotatably o~ ~Df~ b/8 ~, mounted a rotor 7 to be movable~along a sieve or screen 8 in the form of a perforated plate. This sieve or screen 8 bounds or delimits, in relation to the remainder of the container 2, - 6 - .
1083;~95 a withdrawal chamb.er or space 10 for good stock. from which there can be removed the good stock hy means of an outlet opening 11 for further use, for instance for fabricating new paper. The rotor 7 is attached to a shaft 12 which is rotatably mounte~ in a bearing housing 13 and equipped with a belt pulley 14 or equivalent structure serving for driving .
the rotor 7 by means of any suitable and therefore not par-ticularly illustrated drîve motor.
As also seen by referring to the drawing, th.e container or housing 2 of the stock pulper 1 is provided with an outlet opening 15 for light contaminants and with an ;
outlet opening 17 for heavy contaminants, the outlet opening 17 being located at the circumference or periphery of the :
container 2. As to further details of this structure refer~
ence may be had to the aforementioned United States Patent ~`
No. 3,942,728, granted March 9, 1976. However, it should be understood that the stock pulper 1 need not he exclusively designed in the illustrated manner. Thus, for instance, it can be arranged so as to have its axis vertical, and the ~' outlet opening 15 need not be located in the container or housing 2 opposite the rotor 7. According to a proposed con-struction of the stock pulper the outlet opening can be formed by a hollow shaft of the rotor 7.
7 :
~083395 AS taught by the invention there is connected with the stock pulper 1, by means of a short connection line or conduit 18, a separation device or separator 20 for separating the heavy contaminants from the infed stock suspension, these heavy contaminants being passed through the connection line or conduit 18. This separation device or separator 20 contains a vertically arranged housing 21 in the form of a body of revolution in which there is rotatably arranged a rotor 22. The lower end of the housing 21 is of substantially conical configuration having a downwardly direc-ted conical or cone tip and is equipped with a sluice 23 or equivalent structure for removing the separated heavy con-taminants. The rotor 22 has a shaft 24 rotatably mounted in the housing 21 and at which there is attached a drive belt pulley 25. Part of the shaft 24 of the rotor 22 is designed ~as a hollow shaft 24'' whose hollow shaft channel 24a leads out of the internal space 21a of the housing 21 into an out- `
let chamber or compartment 26, and the exit portion or opening 24' of the hollow shaft 24'' is radially outwardly directed into the chamber 26, as shown.
Such type separation device is known from the aforementioned British Patent No. 1,465,888 to which like-wise reference can be specifically made for further details.
,~
~83395 From the outlet chamber 26 of the separation device 2Q there leads back into the inlet line or conduit 4 a return flow line or conduit 27 equipped with a pump 28 and a valve 30 or equivalent structure.
During operation bales B of waste paper are introduced into the stock slusher or pulper 3, which, while : infeeding water, as generally indicated by the arrow W, are slushed and dissolved therein. The thus formed stock sus-pension is fed by means of the inlet line or conduit 4 into the stock pulper 1. The good stock which is contained there-in is then withdrawn for further use by means of the outlet opening 11. Light contaminants are withdrawn in known manner : through the outlet opening 15.
The heavy contaminants which have been caught at the region of the outlet opening 17 by a pocket formed in :.
conventional manner at the stock pulper 1 arrive by means of the connection line or conduit 18 at the separation device 20. If desired, the dilution water for thinning the stock suspension carrying the heavy contaminants can be introduced by means of a water line or conduit 31.
':
An intensive turbulence or vortex flow is formed within the separation device 20 by the rotation of the rotor 22, which turbulence is independent of the flow velocity of _ g _ .. . , , . .. , ,, . .. .. . , , ~
~083395 the stock suspension through the connection line or conduit 18. Since this flow velocity does not play any role, it is possible for the container 2 of the stock pulper 1 to be operated at a low pressure, so that not only is the container itself relievedof any appreciable pressure load, but also all of its seals and so forth.
In the separation device 20 the heavy contaminants are separated from the stock suspension, without coming into contact with the rotor 22. Specifically, these heavy contaminants are immediately acted upon, after their entry into the container 21, by the turbulent flow and moved along the inner wall of the container 21 to its lower region and then into the sluice 23. The stock suspension or liquid thus freed of the heavy constituents or particles then arrives back at the inlet line or conduit 4 by means of the return flow line or conduit 27. In many cases, owing to the pumping action of the radially outwardly directed end of the opening 24' of the hollow shaft 24'', it is possible to omit the arrangement of the pump 28, since the pumping action gener-ated by the hollow shaft is sufficient for conveying purposes.
It should be understood that the inlet opening and the outlet opening of the separation device 20 can be arranged tangentially with respect to the housing 21, some-thing which has only been schematically indicated in the - 10 - , . .
1~83395 drawing to preserve clarity and simplification of the illustration. As a result, the iflow of the stock:suspension or liquid in the housing and out of such housing can be augmented.
It also should be understood that as the separa-tion device 20 it is not absolutely necessary to use the aforementioned equipment as disclosed in the previously cited British Patent No. 1,465,888, and which has been shown -in the drawing. Thus, in place of this device, whenever there can be accepted a less favorable mode of operation, there also can be used another known separation device having a rotor by means of which the good stock is not withdrawn , .
through a hollow shaft of the rotor.
BACKGROOUND OF THE INVENTION
: , The present invention relates to a new and improved construction of a stock pulper installation having a stock pulper for pulping and sorting waste paper.
The stock pulper installation of the invention is of the type wherein the stock pulper comprises a container for receiving a stock suspension which has been pretreated in a pulper or stock slusher. In the container a rotor is movable along a sieve or screen behind which there is located an outlet for good stock. The stock pulper has an outlet opening for light contaminants, also referred to as light weight contaminants or impurities, which are to be separated and an outlet opening for heavy contaminants, also referred to as heavy weight contaminants or impurities, which are to be separated.
A stock pulper of this type is disclosed, by way of example, in the commonly assigned, United States Patent 3,942,728, granted March 9, 1976. With state-of-the-art stock pulpers there was connected, as a general rule, at the outlet for the heavy contaminants to be separated a sluice which had to be periodically opened.
'.'.
~8339~ ``
It has been found that in the presence of a -~
great deal of heavy contaminants, or also for operational --reasons, the withdrawal o~ the heavy contaminants from the related outlet opening can be accomplished continuously, or, in the case of automatically arising, regular interruptions periodically.
Therefore, for this purpose there has been proposed according to United States Patent No. 4,017,033, granted April 12, 1977 and corresponding to West German , -Patent Publication No. 2,514,162, connecting a hydrodyclone -with the outlet opening for the heavy contaminants and in which there are separated the heavy contaminants, whereas the stock suspension freea of the contaminants is fed back again into the installation for the processing of the waste paper. With this prior art installation however there i5 present the drawback that, in order to ensure for a somewhat successful operation of the hydrocyclone, the stock pulper must be operated at an extremely high pressure, something disadvantageous not only for reasons of energy consumption.
On the other hand, if there is arranged a pump between the stock pulper and the hydrocyclone then this pump is exposed to pronounced wear due to the heavy particles which are separated.
SU~$~RY OF THE INVENTION
Therefore, with the foregoing in mind it is a primary object of the present invention to provide an im-proved construction of stock pulper installation which is not associated with the aforementioned drawbacks and limit-ations of the prior art proposals.
;~' ' Another and more specific object of the present invention aims at the provision of a new and improved con-struction of stock pulper installation which overcomes the aforementioned shortcomings and wherein there is possible a faultless separation of the heavy contaminants effluxing from the stock pulper independent of the pressure conditions prevailing in the stock pulper.
- The apparatus of the present invention which allows achieving these objectives is manifested by the features that, a separation device for separating the heavy contamin-ants is connected with the outlet opening for the heavy contaminants, this separation device containing a motor driven rotor for producing a centrifugal action or effect.
With such type separation device the motor driven rotor generates the turbulent movement or vortex flow leading to the formation of the requisite centrifugal action,without _ 4 ~' ;
~083395 any dependency upon the pressure prevailing in the stock pulper and independent of the flo~ velocity of the liquid or suspension flowing from the stock pulper to the separation device. Additionally, the centrifugal action is also ex-tensively independent of the density of the stock suspension effluxing from the outlet opening for the heavy contaminants.
.,.~, ., Preferably, the rotor of the separation device can be simultaneously structured in the manner of a pump impeller and is suitable for conveying the stock suspension out of the separation device. Such type separation device has been disclosed, by way of example, in British Patent No. 1,465,888. Due to such type design of the separation device there is augmented the flow of the stock suspension out of the separation device, so that in a great many in-stances there is not required any special pump for further conveying.
;.'.
The outlet of the separation device or separator can be connected with the inlet line or conduit of the stock pulper. In this way there is realized a particularly simple construction of the inventive stock pulper installation.
~0~3339S
sRIEF DESCRIPTION OF THE DRA~ING
The invention will be better understood and objects other than those set forth.above, will become apparent when `
consideration is given to the following detailed description ;-thereof. Such description makes reference to the annexed drawing wherein the single Figure schematically illustrates .
an exemplary embodiment of inventive stock pulper installation forming part of an installation for processing waste paper.
DETAILED DESCRIPTION OF THE PREFERRED EM~30DIMENTS
Describing nQW the drawing, the stock pulper in-stallation shown by way of example therein, will be seen to comprise a stock pulper 1 which, as already mentioned, can be designed in the manner as taught in the aforementioned commonly assigned, United States Patent No. 3,942,728, granted March 9, 1976. This stock pulper 1 embodies a container 2 to which there is delivered a stock suspension, which has been pre ;.
treated in a conventional stock slusher or pulper 3, by ;~
means of an inlet line 4 equipped with a pump 5. The inlet line or conduit 4 leads to a tangential inlet opening 6 of the container 2. Within the container 2 th.ere is rotatably o~ ~Df~ b/8 ~, mounted a rotor 7 to be movable~along a sieve or screen 8 in the form of a perforated plate. This sieve or screen 8 bounds or delimits, in relation to the remainder of the container 2, - 6 - .
1083;~95 a withdrawal chamb.er or space 10 for good stock. from which there can be removed the good stock hy means of an outlet opening 11 for further use, for instance for fabricating new paper. The rotor 7 is attached to a shaft 12 which is rotatably mounte~ in a bearing housing 13 and equipped with a belt pulley 14 or equivalent structure serving for driving .
the rotor 7 by means of any suitable and therefore not par-ticularly illustrated drîve motor.
As also seen by referring to the drawing, th.e container or housing 2 of the stock pulper 1 is provided with an outlet opening 15 for light contaminants and with an ;
outlet opening 17 for heavy contaminants, the outlet opening 17 being located at the circumference or periphery of the :
container 2. As to further details of this structure refer~
ence may be had to the aforementioned United States Patent ~`
No. 3,942,728, granted March 9, 1976. However, it should be understood that the stock pulper 1 need not he exclusively designed in the illustrated manner. Thus, for instance, it can be arranged so as to have its axis vertical, and the ~' outlet opening 15 need not be located in the container or housing 2 opposite the rotor 7. According to a proposed con-struction of the stock pulper the outlet opening can be formed by a hollow shaft of the rotor 7.
7 :
~083395 AS taught by the invention there is connected with the stock pulper 1, by means of a short connection line or conduit 18, a separation device or separator 20 for separating the heavy contaminants from the infed stock suspension, these heavy contaminants being passed through the connection line or conduit 18. This separation device or separator 20 contains a vertically arranged housing 21 in the form of a body of revolution in which there is rotatably arranged a rotor 22. The lower end of the housing 21 is of substantially conical configuration having a downwardly direc-ted conical or cone tip and is equipped with a sluice 23 or equivalent structure for removing the separated heavy con-taminants. The rotor 22 has a shaft 24 rotatably mounted in the housing 21 and at which there is attached a drive belt pulley 25. Part of the shaft 24 of the rotor 22 is designed ~as a hollow shaft 24'' whose hollow shaft channel 24a leads out of the internal space 21a of the housing 21 into an out- `
let chamber or compartment 26, and the exit portion or opening 24' of the hollow shaft 24'' is radially outwardly directed into the chamber 26, as shown.
Such type separation device is known from the aforementioned British Patent No. 1,465,888 to which like-wise reference can be specifically made for further details.
,~
~83395 From the outlet chamber 26 of the separation device 2Q there leads back into the inlet line or conduit 4 a return flow line or conduit 27 equipped with a pump 28 and a valve 30 or equivalent structure.
During operation bales B of waste paper are introduced into the stock slusher or pulper 3, which, while : infeeding water, as generally indicated by the arrow W, are slushed and dissolved therein. The thus formed stock sus-pension is fed by means of the inlet line or conduit 4 into the stock pulper 1. The good stock which is contained there-in is then withdrawn for further use by means of the outlet opening 11. Light contaminants are withdrawn in known manner : through the outlet opening 15.
The heavy contaminants which have been caught at the region of the outlet opening 17 by a pocket formed in :.
conventional manner at the stock pulper 1 arrive by means of the connection line or conduit 18 at the separation device 20. If desired, the dilution water for thinning the stock suspension carrying the heavy contaminants can be introduced by means of a water line or conduit 31.
':
An intensive turbulence or vortex flow is formed within the separation device 20 by the rotation of the rotor 22, which turbulence is independent of the flow velocity of _ g _ .. . , , . .. , ,, . .. .. . , , ~
~083395 the stock suspension through the connection line or conduit 18. Since this flow velocity does not play any role, it is possible for the container 2 of the stock pulper 1 to be operated at a low pressure, so that not only is the container itself relievedof any appreciable pressure load, but also all of its seals and so forth.
In the separation device 20 the heavy contaminants are separated from the stock suspension, without coming into contact with the rotor 22. Specifically, these heavy contaminants are immediately acted upon, after their entry into the container 21, by the turbulent flow and moved along the inner wall of the container 21 to its lower region and then into the sluice 23. The stock suspension or liquid thus freed of the heavy constituents or particles then arrives back at the inlet line or conduit 4 by means of the return flow line or conduit 27. In many cases, owing to the pumping action of the radially outwardly directed end of the opening 24' of the hollow shaft 24'', it is possible to omit the arrangement of the pump 28, since the pumping action gener-ated by the hollow shaft is sufficient for conveying purposes.
It should be understood that the inlet opening and the outlet opening of the separation device 20 can be arranged tangentially with respect to the housing 21, some-thing which has only been schematically indicated in the - 10 - , . .
1~83395 drawing to preserve clarity and simplification of the illustration. As a result, the iflow of the stock:suspension or liquid in the housing and out of such housing can be augmented.
It also should be understood that as the separa-tion device 20 it is not absolutely necessary to use the aforementioned equipment as disclosed in the previously cited British Patent No. 1,465,888, and which has been shown -in the drawing. Thus, in place of this device, whenever there can be accepted a less favorable mode of operation, there also can be used another known separation device having a rotor by means of which the good stock is not withdrawn , .
through a hollow shaft of the rotor.
Claims (5)
1. A stock pulper installation comprising:
a stock pulper for pulping and sorting waste paper;
said stock pulper comprising a container for the reception of a stock suspension which is pre-treated in a pulper unit;
a rotor arranged within the container;
a sieve arranged within the container;
said rotor being movable along the sieve;
outlet means for good stock arranged behind said sieve;
said stock pulper having an outlet opening for light contaminants to be separated from the stock suspension and an outlet opening for heavy contaminants to be separated from the stock suspension;
a separation device for the separation of heavy contaminants connected with said outlet opening for the heavy contaminants;
and a motor driven rotor provided in said separation device for generating a centrifugal action.
a stock pulper for pulping and sorting waste paper;
said stock pulper comprising a container for the reception of a stock suspension which is pre-treated in a pulper unit;
a rotor arranged within the container;
a sieve arranged within the container;
said rotor being movable along the sieve;
outlet means for good stock arranged behind said sieve;
said stock pulper having an outlet opening for light contaminants to be separated from the stock suspension and an outlet opening for heavy contaminants to be separated from the stock suspension;
a separation device for the separation of heavy contaminants connected with said outlet opening for the heavy contaminants;
and a motor driven rotor provided in said separation device for generating a centrifugal action.
2. The stock pulper installation as defined in claim 1, wherein:
said rotor of the separation device is structured as a pump impeller and serves for conveying stock suspension out of the separation device containing heavy conta-minants.
said rotor of the separation device is structured as a pump impeller and serves for conveying stock suspension out of the separation device containing heavy conta-minants.
3. The stock pulper installation as defined in claim 1, further including:
an inlet line for the stock pulper; and said separation device having an outlet means connected with the inlet line of the stock pulper.
an inlet line for the stock pulper; and said separation device having an outlet means connected with the inlet line of the stock pulper.
4. A stock pulper installation comprising:
a stock pulper for pulping and sorting waste paper;
said stock pulper comprising a container for the reception of a pre-treated stock suspension;
outlet means for good stock provided for said container;
said stock pulper having an outlet opening for light contaminants to be separated from the stock suspension and. an outlet opening for heavy contaminants to be separated from the stock suspension;
a separation device for the separation of heavy contaminants connected with said outlet opening for the heavy contaminants;
and driven rotor means provided in said separation device for generating a centrifugal action.
a stock pulper for pulping and sorting waste paper;
said stock pulper comprising a container for the reception of a pre-treated stock suspension;
outlet means for good stock provided for said container;
said stock pulper having an outlet opening for light contaminants to be separated from the stock suspension and. an outlet opening for heavy contaminants to be separated from the stock suspension;
a separation device for the separation of heavy contaminants connected with said outlet opening for the heavy contaminants;
and driven rotor means provided in said separation device for generating a centrifugal action.
5. The stock pulper installation as defined in claim 1, wherein:
said separation device containing said motor driven rotor enables said stock pulper to operate under pressure conditions essentially independent of the separation action of the separation device.
said separation device containing said motor driven rotor enables said stock pulper to operate under pressure conditions essentially independent of the separation action of the separation device.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH1463977 | 1977-11-30 | ||
| CH14639/77 | 1977-11-30 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1083395A true CA1083395A (en) | 1980-08-12 |
Family
ID=4402572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA315,220A Expired CA1083395A (en) | 1977-11-30 | 1978-10-31 | Stock pulper installation having a stock pulper for pulping and sorting waste paper |
Country Status (13)
| Country | Link |
|---|---|
| JP (1) | JPS5482405A (en) |
| AR (1) | AR219771A1 (en) |
| AT (1) | ATA873277A (en) |
| BE (1) | BE872359A (en) |
| BR (1) | BR7807794A (en) |
| CA (1) | CA1083395A (en) |
| DE (1) | DE2757581A1 (en) |
| ES (1) | ES474587A1 (en) |
| FI (1) | FI783080A (en) |
| FR (1) | FR2410700A1 (en) |
| IT (1) | IT1100386B (en) |
| NL (1) | NL173077C (en) |
| SE (1) | SE7812192L (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AT365676B (en) * | 1979-05-04 | 1982-02-10 | Escher Wyss Gmbh | PLANT FOR TREATING WASTE PAPER |
| AT378541B (en) * | 1981-03-23 | 1985-08-26 | Escher Wyss Gmbh | SORTING DEVICE FOR FABRIC SUSPENSIONS FOR PAPER PRODUCTION |
| DE3140549C2 (en) * | 1981-10-13 | 1986-10-16 | J.M. Voith Gmbh, 7920 Heidenheim | Sorting device for fiber suspensions in the paper industry |
| EP0158827B1 (en) * | 1984-04-17 | 1989-10-04 | J.M. Voith GmbH | Arrangement for treating waste paper |
| DE3440005A1 (en) * | 1984-11-02 | 1986-05-15 | J.M. Voith Gmbh, 7920 Heidenheim | SORTING APPARATUS FOR FIBER SUSPENSIONS |
| FI77066C (en) * | 1987-09-01 | 1989-01-10 | Ahlstroem Oy | Method and apparatus for purifying pulp suspension |
| FI81642C (en) * | 1988-05-20 | 1990-11-12 | Yhyneet Paperitehtaat Oy Walki | Feeder system for a molder by a dry paper machine |
| DE19727184A1 (en) * | 1997-06-26 | 1999-01-07 | Voith Sulzer Stoffaufbereitung | Process for suspending and cleaning paper materials containing interfering substances |
| WO2013058975A1 (en) * | 2011-10-18 | 2013-04-25 | Kadant Black Clawson Inc. | Detrasher and detrashing system |
| CN111957446A (en) * | 2020-06-19 | 2020-11-20 | 甘肃普罗生物科技有限公司 | Mill is with centrifugal cleaner of high-efficient quickly separating impurity |
-
1977
- 1977-12-06 AT AT873277A patent/ATA873277A/en not_active Application Discontinuation
- 1977-12-23 DE DE19772757581 patent/DE2757581A1/en not_active Ceased
-
1978
- 1978-10-10 FI FI783080A patent/FI783080A/en unknown
- 1978-10-19 AR AR27414778A patent/AR219771A1/en active
- 1978-10-26 FR FR7830490A patent/FR2410700A1/en active Granted
- 1978-10-27 ES ES474587A patent/ES474587A1/en not_active Expired
- 1978-10-31 CA CA315,220A patent/CA1083395A/en not_active Expired
- 1978-11-15 NL NL7811295A patent/NL173077C/en not_active IP Right Cessation
- 1978-11-27 SE SE7812192A patent/SE7812192L/en unknown
- 1978-11-28 JP JP14613678A patent/JPS5482405A/en active Pending
- 1978-11-28 BR BR7807794A patent/BR7807794A/en unknown
- 1978-11-29 IT IT3031178A patent/IT1100386B/en active
- 1978-11-29 BE BE192003A patent/BE872359A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| FR2410700A1 (en) | 1979-06-29 |
| IT1100386B (en) | 1985-09-28 |
| JPS5482405A (en) | 1979-06-30 |
| BR7807794A (en) | 1979-07-31 |
| ATA873277A (en) | 1980-03-15 |
| FI783080A (en) | 1979-05-31 |
| BE872359A (en) | 1979-05-29 |
| SE7812192L (en) | 1979-05-31 |
| DE2757581A1 (en) | 1979-05-31 |
| IT7830311A0 (en) | 1978-11-29 |
| NL173077C (en) | 1983-12-01 |
| AR219771A1 (en) | 1980-09-15 |
| FR2410700B1 (en) | 1983-12-30 |
| NL7811295A (en) | 1979-06-01 |
| NL173077B (en) | 1983-07-01 |
| ES474587A1 (en) | 1979-03-16 |
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Legal Events
| Date | Code | Title | Description |
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| MKEX | Expiry |