CN113622212B - Bamboo pulp fiber screening device - Google Patents
Bamboo pulp fiber screening device Download PDFInfo
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- CN113622212B CN113622212B CN202110919907.8A CN202110919907A CN113622212B CN 113622212 B CN113622212 B CN 113622212B CN 202110919907 A CN202110919907 A CN 202110919907A CN 113622212 B CN113622212 B CN 113622212B
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- screen frame
- pulp
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- screening
- bamboo pulp
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- 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
- D21D5/02—Straining or screening the pulp
- D21D5/023—Stationary screen-drums
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
Abstract
The invention discloses a bamboo pulp fiber screening device which comprises a screening barrel, wherein a screen frame is arranged in the screening barrel, the screening barrel and the screen frame are cylindrical, screen holes are uniformly formed in the screen frame, a screening cavity is defined between the outer wall of the screen frame and the inner wall of the screening barrel, a stirring assembly is arranged in the middle of the screen frame, the lower part of the screen frame is connected with a pulp inlet pipeline, the upper part of the screen frame is connected with a pulp outlet pipeline, and the lower part of the screening cavity is connected with a fine component discharge pipeline. The bamboo pulp is pumped into the screen frame through the pulp inlet pipeline, so that the stirring assembly rotates, fine components in the bamboo pulp are pushed to pass through the screen holes to flow to the screening cavity and are discharged through the fine component discharge pipeline, and the fine pulp is discharged through the pulp outlet pipeline. The bamboo pulp fiber screening device can effectively screen out tiny components in the bamboo pulp, so that the binding force among fibers in the bamboo pulp household paper is improved, the problem of heavy dust of the bamboo pulp household paper is solved, and in addition, the quality of bamboo fluff pulp can be remarkably improved.
Description
Technical Field
The invention relates to the technical field of pulping and papermaking, in particular to a bamboo pulp fiber screening device.
Background
It is known that the proportion of fine components such as miscellaneous cells in the bamboo pulp reaches more than 30%, and the fine components seriously affect the product quality in the paper making of the bamboo pulp household paper and the production of the bamboo fluff pulp. For the current bamboo pulp household paper, as the combination of fine components such as miscellaneous cells in the bamboo pulp and fibers is weaker, the problem of heavier dust generally exists, and if the fine components such as the miscellaneous cells in the bamboo pulp can be removed, the method has great significance for solving the dust problem of the household paper; in the production of bamboo fluff pulp, the quality of the fluff pulp can be obviously improved by removing fine components such as mixed cells and the like in the bamboo fluff pulp, and the method has obvious significance in improving the fluffiness, the fluffiness and the dust of the bamboo fluff pulp board.
At present, screening of fine components in bamboo pulp at home and abroad almost stays in a laboratory, and a pall screening instrument is laboratory screening equipment, but is limited to gradient screening of a small amount of pulp in the laboratory, so that large-scale industrialized application cannot be realized, and related industrialized equipment for screening fine components such as impurity cells from the bamboo pulp is not available at present.
Disclosure of Invention
In view of the defects in the prior art, the invention provides the bamboo pulp fiber screening device which can effectively screen out fine components such as miscellaneous cells and the like in the bamboo pulp, and is convenient for industrialized implementation.
The technical scheme adopted by the invention is as follows: the bamboo pulp fiber screening device comprises a screening cylinder body, wherein a screen frame is arranged in the screening cylinder body, the screening cylinder body and the screen frame are cylindrical, screen holes are uniformly formed in the screen frame, the lower part of the screen frame is connected with a pulp inlet pipeline, and the upper part of the screen frame is connected with a pulp outlet pipeline; a screening cavity is defined between the outer wall of the screen frame and the inner wall of the screening cylinder, and the lower part of the screening cavity is connected with a fine component discharge pipeline;
the middle part of the screen frame is provided with a stirring assembly, the stirring assembly comprises a rotating shaft and a plurality of groups of blades connected to the rotating shaft, and the rotating shaft is driven to rotate by a motor;
bamboo pulp is pumped into the screen frame through the pulp inlet pipeline, is pumped into the screen frame along the tangential direction through the pulp inlet pipeline and moves from bottom to top in the screen frame in a rotational flow mode, the motor drives the rotating shaft to rotate to drive the plurality of groups of blades to rotate, fine components in the bamboo pulp are pushed to pass through the sieve holes to flow to the sieving cavity and are discharged through the fine component discharge pipeline, and fine pulp for sieving out the fine components flows out through the pulp outlet pipeline.
As an improvement to the scheme, the sieve holes are round holes or square holes, and the diameter of the round holes/the side length of the square holes are 0.25-0.5 mm.
As an improvement to the scheme, a first connecting pipe and a first flange are arranged at the lower part of the screen frame, a second connecting pipe and a second flange are arranged at the upper part of the screen frame, the screen frame is connected with the pulp inlet pipeline through the first connecting pipe and the first flange, and is connected with the pulp outlet pipeline through the second connecting pipe and the second flange.
As an improvement of the scheme, the first connecting pipe is connected with a dilution water pipe, and the bottom of the screen frame is provided with a drain valve.
As an improvement to the scheme, each group of blades comprises two blades which are oppositely arranged, the blades are connected to the rotating shaft through supporting rods, the blades are obliquely arranged relative to the supporting rods, and the oblique direction of the blades is matched with the rotating direction of the rotating shaft.
As an improvement to the scheme, the inclination angle of the blade relative to the supporting rod is 0-900.
As an improvement to the scheme, the plurality of groups of blades are arranged at intervals up and down on the rotating shaft, and the blades are arranged at intervals from top to bottom in a staggered manner.
As an improvement to the scheme, four groups of blades are arranged on the rotating shaft, and in the horizontal projection of the supporting rods corresponding to the four groups of blades, the included angle between two adjacent blades is 45 degrees.
As an improvement to the above, an overflow pipe is connected to the upper portion of the sieving chamber, through which fine components flowing to the upper portion of the sieving chamber are discharged.
As an improvement to the scheme, the pulp inlet pipeline is connected with the pressure screen outlet through a pressure pump and is tangentially communicated with the side wall of the screen frame.
Compared with the prior art, in the bamboo pulp fiber screening device provided by the invention, the bamboo pulp is pumped into the screen frame along the tangential direction through the pulp inlet pipeline, so that the bamboo pulp moves from bottom to top in the screen frame in a spiral-flow mode, the motor drives the rotating shaft to rotate so as to drive the plurality of groups of blades to rotate, the pressure of the bamboo pulp to the outside of the screen frame is increased, fine components in the bamboo pulp are pushed to flow into the screening cavity through the sieve holes, the fine components are discharged through the fine component discharge pipeline, and fine pulp screened out of the fine components flows out through the pulp outlet pipeline.
The bamboo pulp fiber screening device is convenient to industrialize and apply, fine components in the bamboo pulp can be effectively screened out, the binding force among fibers in the bamboo pulp household paper is further improved, the problem that dust of the bamboo pulp household paper is heavier is solved, and in addition, the quality of bamboo fluff pulp can be remarkably improved.
Drawings
FIG. 1 is a schematic structural view of a bamboo pulp fiber screening device in an embodiment of the present application;
fig. 2 is a schematic top view of a stirring assembly in an embodiment of the present application.
Detailed Description
The present invention will be described in further detail with reference to examples. It is specifically noted that the following examples are only for illustrating the present invention, but do not limit the scope of the present invention. Likewise, the following examples are only some, but not all, of the examples of the present application, and all other examples obtained by a person of ordinary skill in the art without making any inventive effort are within the scope of the present invention.
In the description of the present invention, it should be understood that the terms "upper," "lower," "top," "bottom," "front," "rear," "horizontal," "vertical," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more. In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be directly connected or indirectly connected through an intermediate medium, and can be connected inside two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art in a specific case.
The invention provides a bamboo pulp fiber screening device which is convenient for industrialized popularization and application, is used for screening fine components such as impurity cells from bamboo pulp, so as to improve the binding force between fibers in bamboo pulp household paper, overcome the problem of heavier dust of the bamboo pulp household paper, and can also remarkably improve the quality of bamboo fluff pulp.
Referring to fig. 1, fig. 1 shows a structure of a bamboo pulp fiber screening device provided in an embodiment of the present application, where the bamboo pulp fiber screening device includes a screening cylinder 10, a screen frame 20 is installed in the screening cylinder 10, the screening cylinder 10 and the screen frame 20 are both cylindrical, screen holes are uniformly formed on the screen frame 20, a lower portion of the screen frame 20 is connected with a pulp inlet pipe, and an upper portion of the screen frame 20 is connected with a pulp outlet pipe; a screening chamber 30 is defined between the outer wall of the screen frame 20 and the inner wall of the screening cylinder 10, and a lower portion of the screening chamber 30 is connected to the first fine component discharge duct 11.
The middle part of the screen frame 20 is provided with a stirring assembly, the stirring assembly comprises a rotating shaft 401 and a plurality of groups of blades 402 connected to the rotating shaft 401, and the rotating shaft 401 is driven to rotate by a motor 41.
The bamboo pulp 100 without separating the fine components is pumped into the screen frame 20 through the pulp inlet pipeline, the cavity is enlarged after the bamboo pulp 100 enters the screen frame 20, the flow speed is reduced, the motor 41 drives the rotating shaft 401 to rotate to drive the multiple groups of blades 402 to rotate, reverse thrust is generated on the bamboo pulp 100 entering the screen frame 20, the speed of the bamboo pulp 100 flowing upwards to the pulp outlet pipeline is reduced, the residence time of the bamboo pulp 100 in the screen frame 20 is prolonged, the rotating multiple groups of blades 402 simultaneously push the fine components 101 in the bamboo pulp 100 to flow to the screening cavity 30 through the screen holes and are discharged through the first fine component discharge pipeline 11, and the fine pulp 102 for screening out the fine components 101 flows out through the pulp outlet pipeline under the pressure of the pumped bamboo pulp 100.
The rotating multiple groups of blades 402 enable the bamboo pulp 100 to generate centrifugal force towards the outer wall of the screen frame, so that the pressure of the bamboo pulp towards the outer part of the screen frame is increased, the fine components 101 in the bamboo pulp 100 are accelerated to flow out of the screen frame, and the probability of discharging the fine components 101 from the screen holes is increased.
The pulp inlet pipe is tangentially connected to the outer circumference of the side wall of the screen frame 20, that is, the bamboo pulp 100 is pumped into the screen frame 20 along the tangential direction of the outer circumference of the side wall of the screen frame 20, so that the bamboo pulp moves from bottom to top in the screen frame in a rotational flow manner, and the plurality of groups of blades 402 rotate in the opposite direction to the pumping direction of the bamboo pulp 100.
Further, the screen frame 20 is detachably connected to the screening cylinder 10, so that the screen frame 20 is convenient to detach, clean and maintain, and replace screen holes with different screen hole specifications, so as to meet screening requirements of different levels of bamboo pulp.
Further, the mesh openings are circular or square openings, the mesh number of the screen frame is 35-60 mesh, that is, the diameter of the circular openings/the side length of the square openings is 0.25-0.5 mm, so as to ensure that the fine components 101 with the size range of 0.25-0.5 mm in the bamboo pulp 100 and less than 0.25mm can smoothly pass through the mesh openings to enter the screening cavity 30.
Preferably, the sieve holes are round holes with smooth inner walls.
Further, the bottom end of the rotating shaft 401 is connected with the motor 41 through a belt wheel 42 and a belt 43, and the motor is an ac motor.
With continued reference to fig. 1, in this embodiment, a first connecting pipe 21 and a first flange are disposed at the lower portion of the screen frame 20, a second connecting pipe 22 and a second flange are disposed at the upper portion of the screen frame 20, the screen frame 20 is connected to the slurry inlet pipe through the first connecting pipe 21 and the first flange, is connected to the slurry outlet pipe through the second connecting pipe 22 and the second flange, and the fine slurry 102 for screening out the fine component 101 enters the next process through the slurry outlet pipe.
The first connecting pipe 21 and the second connecting pipe 22 are arranged along the tangential direction of the side wall of the screen frame 20.
Furthermore, the pulp inlet pipeline is connected with the pressure screen outlet through the pressure pump, and the bamboo pulp from the bamboo pulp pulping pressure screen impurity removal screening working section is pumped into the bamboo pulp fiber screening device provided by the embodiment through the pressure pump through the pulp inlet pipeline to screen out the tiny components, so that in practical application, only one set of the bamboo pulp fiber screening device is needed to be added on the existing pressure screen outlet pipeline, and the industrialized implementation is convenient.
In this embodiment, a connection hole and a connection flange are formed at the lower part of the screening cylinder 10, the first fine component discharge pipe 11 is installed on the screening cavity 30 through the connection hole and the connection flange, and the fine component 101 screened from the bamboo pulp 100 is discharged by the first fine component discharge pipe 11 for recycling or treatment.
Further, in this embodiment, an overflow connection pipe 12 is further connected to the upper portion of the sieving chamber 30, and the fine components flowing to the upper portion of the sieving chamber 30 are discharged through the overflow connection pipe 12.
Wherein the first fine component discharge pipe 11 and the overflow connection pipe 12 are arranged along the tangential direction of the side wall of the sieving cylinder 10.
Referring to fig. 2 in combination, fig. 2 shows a top view structure of the stirring assembly in this embodiment, each set of blades 402 includes two blades arranged oppositely, the blades 402 are connected to the rotating shaft 401 through support rods 403, two support rods 403 corresponding to each set of blades 402 are in a straight line, the blades 402 are obliquely arranged relative to the support rods 403, and an oblique direction of the blades is matched with a rotation direction of the rotating shaft 401, so as to reduce stirring resistance of the stirring assembly and improve stirring efficiency.
Further, the inclination angle α of the blade 402 with respect to the support bar 403 is 0 to 90 °, and preferably α is 30 to 60 °.
In this embodiment, the plurality of groups of blades 402 are arranged at intervals up and down on the rotating shaft 401, and are arranged at intervals from top to bottom in a staggered manner, and the large blades and the small blades are arranged at intervals up and down, so that the smoothness of the rotating flow of the bamboo pulp 100 in the screen frame 20 is improved, turbulence can be effectively avoided, screen holes are prevented from being blocked, and meanwhile, the probability of outward diffusion of fine components in the bamboo pulp 100 is increased, thereby improving the screening efficiency of fine fibers.
Wherein, the blade sets up to rectangular piece or trapezoidal piece, it is understood that big blade is longer, wider than the less blade of blade, the bracing piece of big blade is also longer, thicker than the bracing piece of less blade.
Further, in this embodiment, four sets of blades 402 are disposed on the rotating shaft 401, where the four sets of blades 402 are arranged at intervals from top to bottom in the horizontal projection of the support rods 403 corresponding to the four sets of blades 402, that is, in the top view structure of the stirring assembly, the included angle θ between two adjacent support rods 403 is set to 45 °, and the eight support rods 403 of the four sets of blades 402 are uniformly distributed on the rotating shaft 401 in a radial manner along the circumferential direction, so that the bamboo pulp 100 in the screen frame 20 is fully stirred in both vertical and horizontal dimensions, the smoothness of the rotational flow of the bamboo pulp 100 is further improved, and the screening efficiency of fine fibers is improved.
In a preferred embodiment of this embodiment, the first connecting pipe 21 is further connected with a dilution water pipe 23, and a predetermined amount of clean water can be added through the dilution water pipe 23 to adjust the concentration of the bamboo pulp 100 in the process that the bamboo pulp 100 is pumped into the screen frame 20 through the pulp inlet pipe, so as to adjust the concentration of the fine component 101 discharged from the fine component discharge pipe and the concentration of the fine pulp 102 flowing out from the pulp outlet pipe, so that the fine pulp 102 can directly enter the next treatment process, and the fine component 101 can be recycled.
In addition, the clean water is pumped into the dilution water pipe 23, which is favorable for dispersing the fiber and the fine components in the bamboo pulp 100 more fully, thereby improving the screening efficiency of the fine components 101.
Further, a drain valve is also provided at the bottom of the screen frame 20 for draining impurities that may be deposited at the bottom of the screen frame 20 during the screening process of bamboo pulp when the machine is stopped.
When the bamboo pulp fiber screening device provided by the embodiment is used, firstly, clean water is injected into the screen frame 20, the overflow connecting pipe 12 flows out of the clean water, then, water injection is stopped, the motor 41 is started, the stirring assembly is driven to rotate at a high speed, the bamboo pulp 100 is pumped into the screen frame 20 through the pulp inlet pipeline, the resistance to flow and the centrifugal force towards the outside of the screen frame 20 are reduced under the stirring action of the plurality of groups of blades 402 rotating at a high speed in the upward flow process, fine components in the bamboo pulp 100 rapidly enter the screening cavity 30 through the screen holes due to the short diameter or the short length, and good pulp containing longer bamboo fibers cannot be left in the screen frame 20 through the screen holes, and is streamed to a next procedure through the pulp outlet pipeline under the action of pulp inlet pressure.
The bamboo pulp fiber screening device provided by the embodiment is suitable for industrialized implementation, can effectively screen out tiny components in bamboo pulp, further improve the binding force among fibers in bamboo pulp household paper, overcome the problem of heavier dust of the bamboo pulp household paper, and can also remarkably improve the quality of bamboo fluff pulp.
The foregoing description is only exemplary embodiments of the present application and is not intended to limit the scope of the present application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application, or direct or indirect application in other related technical fields are included in the scope of the present application.
Claims (6)
1. The bamboo pulp fiber screening device is characterized by comprising a screening cylinder body, wherein a screen frame is arranged in the screening cylinder body, the screening cylinder body and the screen frame are cylindrical, screen holes are uniformly formed in the screen frame, the lower part of the screen frame is connected with a pulp inlet pipeline, and the upper part of the screen frame is connected with a pulp outlet pipeline; a screening cavity is defined between the outer wall of the screen frame and the inner wall of the screening cylinder, the lower part of the screening cavity is connected with a fine component discharge pipeline, and the upper part of the screening cavity is also connected with an overflow connecting pipe;
the middle part of the screen frame is provided with a stirring assembly, the stirring assembly comprises a rotating shaft and a plurality of groups of blades connected to the rotating shaft, the plurality of groups of blades rotate in the reverse direction of the pumping direction of the bamboo pulp, and the rotating shaft is driven to rotate by a motor;
bamboo pulp is pumped into a screen frame along tangential direction through the pulp inlet pipeline and moves from bottom to top in the screen frame in a rotational flow mode, the motor drives the rotating shaft to rotate to drive the plurality of groups of blades to rotate, fine components in the bamboo pulp are pushed to pass through the screen holes to flow to the screening cavity and are discharged through the fine component discharge pipeline, fine pulp for screening out the fine components flows out through the pulp outlet pipeline, and the bamboo pulp fiber screening device is used in the following mode: firstly, injecting clear water into a screen frame until clear water flows out of an overflow connecting pipe, stopping water injection, then starting a motor to drive a stirring assembly to rotate at a high speed, pumping bamboo pulp into the screen frame through a pulp inlet pipe, under the stirring action of a plurality of groups of blades rotating at the high speed in the upward flowing process, enabling fine components in the bamboo pulp to enter a screening cavity through screen holes under the stirring action of a plurality of groups of blades rotating at the high speed, and enabling good pulp containing longer bamboo fibers to flow out of the screen frame through a pulp outlet pipe, wherein a first connecting pipe is arranged at the lower part of the screen frame, and is connected with a dilution water pipe which is communicated with the pulp inlet pipe;
the plurality of groups of blades are arranged at intervals up and down on the rotating shaft, and large blades and small blades are arranged at intervals in a staggered manner from top to bottom;
four groups of blades are arranged on the rotating shaft, and in the horizontal projection of the supporting rods corresponding to the four groups of blades, the included angle between two adjacent blades is 45 degrees;
the pulp inlet pipeline is connected with the pressure screen outlet through a pressure pump and is tangentially communicated with the side wall of the screen frame.
2. The bamboo pulp fiber screening device according to claim 1, wherein the screen holes are round holes or square holes, and the diameter of the round holes/the side length of the square holes is 0.25-0.5 mm.
3. The bamboo pulp fiber screening device according to claim 1, wherein a first flange is further arranged at the lower part of the screen frame, a second connecting pipe and a second flange are arranged at the upper part of the screen frame, the screen frame is connected with the pulp inlet pipeline through the first connecting pipe and the first flange, and is connected with the pulp outlet pipeline through the second connecting pipe and the second flange.
4. A bamboo pulp fiber screening apparatus according to claim 3, characterized in that a blow down valve is provided at the bottom of the screen frame.
5. The bamboo pulp fiber screening device according to claim 1, wherein each group of blades comprises two oppositely arranged blades, the blades are connected to the rotating shaft through supporting rods, the blades are obliquely arranged relative to the supporting rods, and the oblique direction of the blades is matched with the rotating direction of the rotating shaft.
6. Bamboo pulp fiber screening device according to claim 5, characterized in that the inclination angle of the blade with respect to the support bar is 0-90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110919907.8A CN113622212B (en) | 2021-08-11 | 2021-08-11 | Bamboo pulp fiber screening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110919907.8A CN113622212B (en) | 2021-08-11 | 2021-08-11 | Bamboo pulp fiber screening device |
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| Publication Number | Publication Date |
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| CN113622212A CN113622212A (en) | 2021-11-09 |
| CN113622212B true CN113622212B (en) | 2023-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202110919907.8A Active CN113622212B (en) | 2021-08-11 | 2021-08-11 | Bamboo pulp fiber screening device |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114481666A (en) * | 2021-12-21 | 2022-05-13 | 泰盛科技（集团）股份有限公司 | Bamboo pulp fiber grading process and product thereof |
| CN114855496B (en) * | 2022-04-15 | 2023-10-20 | 泰盛科技（集团）股份有限公司 | Bamboo fluff pulp preparation process and product thereof |
| CN117364525B (en) * | 2023-10-08 | 2024-10-15 | 泰盛科技（集团）股份有限公司 | Bamboo fluff pulp board and preparation method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI80735B (en) * | 1988-08-04 | 1990-03-30 | Tampella Oy Ab | FOERFARANDE OCH ANORDNING FOER SORTERING OCH BEHANDLING AV MASSA. |
| DE69522587T2 (en) * | 1995-07-17 | 2002-06-06 | Kvaerner Pulping Ab, Karlstad | METHOD FOR TREATING A PAPER CELL AND DEVICE THEREFOR |
| DE102010034119A1 (en) * | 2010-08-12 | 2012-02-16 | Automatik Plastics Machinery Gmbh | Device for drying granular grain, has rotor blade provided with dewatering wire aperture whose size is smaller than size of granular grain such that process fluid is separated by passage from wire front side to wire back side of grain |
| CN203768725U (en) * | 2013-12-31 | 2014-08-13 | 山东晨钟机械股份有限公司 | Fine screen |
| US10226774B2 (en) * | 2015-02-23 | 2019-03-12 | Fluid Quip, Inc. | Multi-zoned paddle screen apparatus |
| CN206956448U (en) * | 2017-05-02 | 2018-02-02 | 李风志 | A kind of pressurized screen |
| CN109127352A (en) * | 2018-07-25 | 2019-01-04 | 安徽卓煌机械设备有限公司 | A kind of cement particle and fragment separate transfer |
| CN210439056U (en) * | 2019-08-09 | 2020-05-01 | 台州森林造纸有限公司 | Pressure screen |
| CN113152138A (en) * | 2021-02-10 | 2021-07-23 | 徐州利华环保科技有限公司 | Efficient and energy-saving pulp pressure screen and working method thereof |
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