CN108677583B - Annular screen and application thereof in pressure screen - Google Patents
Annular screen and application thereof in pressure screen Download PDFInfo
- Publication number
- CN108677583B CN108677583B CN201810780564.XA CN201810780564A CN108677583B CN 108677583 B CN108677583 B CN 108677583B CN 201810780564 A CN201810780564 A CN 201810780564A CN 108677583 B CN108677583 B CN 108677583B
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- CN
- China
- Prior art keywords
- screen
- hub
- pressure
- rotary drum
- flange
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Classifications
-
- 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
- D21D5/06—Rotary screen-drums
-
- 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
- D21D5/16—Cylinders and plates for screens
-
- 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
The invention relates to an annular screen and application thereof in a pressure screen, and belongs to the technical field of pressure screens. According to the annular screen, the shin bars are arranged in the screen hub of the annular screen, so that aggregation of filiform substances in the annular screen is effectively avoided, the filiform substances are timely discharged from the bottom of the annular screen, the risk of stopping the rotary drum due to blockage is eliminated, and the production efficiency is improved; the screen cloth and the inside of screen cloth hub all are fixed through bolted connection spare, are convenient for install and maintenance.
Description
Technical Field
The invention relates to an annular screen, and belongs to the technical field of pressure screens.
Background
At present, the components of raw materials recovered in paper mills are complex, the raw materials contain filaments such as woven bags, hemp products and the like, after the raw materials are crushed by a rotary drum, coarse slag is directly discharged from the bottom of the rotary drum, fine filaments enter an annular screen through the rotary drum, and the filaments are gathered into clusters on the inner wall of the annular screen under the action of centrifugal force, so that the rotation torque of the rotary drum is increased, the current of a motor is increased, the motor is stopped frequently, and indexes such as stickies, printing ink, dust and the like are increased when the motor is stopped, so that the pulp quality is influenced.
Disclosure of Invention
According to the defects in the prior art, the technical problems to be solved by the invention are as follows: the annular screen is provided, so that the phenomenon of stopping caused by blockage of the annular screen is effectively avoided, and the production efficiency is improved.
The invention relates to an annular screen, which comprises a screen hub arranged vertically, and is characterized in that: the inner surface of the screen hub is provided with a shank which starts from the top to the bottom of the screen hub.
It is further preferred that the shin bars disposed within the screen hub encircle the inner surface of the screen hub for a complete revolution.
Further preferably, the screen hub consists of an upper flange, an upper compression ring, an upper rib, a middle flange, a lower shank, a lower compression ring, a lower flange and a screen; an upper pressing ring is arranged below the upper flange and connected with the middle flange through upper ribs; a lower compression ring is arranged on the lower flange and connected with the middle flange through a lower shank; the upper edge of the screen is fixed between the upper flange and the upper pressing ring, and the lower edge of the screen is fixed between the lower flange and the lower pressing ring.
Further preferably, 3 cylindrical protrusions are arranged on the outer side face of the shank, corresponding threaded holes are formed in the 3 cylindrical protrusions, the 3 cylindrical protrusions penetrate through the screen, and are respectively inlaid in the upper flange, the middle flange and the lower flange from top to bottom and fastened through bolts.
When the annular screen is applied to the pressure screen, the pressure screen comprises a vertically arranged pressure screen body, the pressure screen body is of a barrel-shaped structure, a good pulp outlet pipe is connected to the middle of the left side of the pressure screen body, a slag pulp outlet pipe is connected to the bottom of the left side of the pressure screen body, a pressure screen cover used for sealing is connected to the opening of the pressure screen body, a light slag outlet is formed in the top of the pressure screen cover, a raw material inlet is formed in the side face of the pressure screen cover, a screen hub is mounted in the pressure screen body, a shank is arranged in the screen hub, a rotary drum spindle is arranged along the center line of the screen hub, a rotary drum is fixed on the rotary drum spindle and is arranged in the screen hub, the upper end of the rotary drum spindle is mounted on the pressure screen cover through a bearing, and the lower half section of the rotary drum spindle is mounted at the bottom of the pressure screen body through the bearing.
It is further preferable that a frame is arranged at the bottom of the pressure screen body, a motor is arranged on the side face of the pressure screen body, a drum belt pulley is arranged at the lower end of the drum main shaft, a motor belt pulley is arranged at the main shaft end of the motor, and the drum belt pulley is connected with the motor belt pulley through a belt.
It is further preferable that the light slag outlet is provided at the left side of the top of the pressure screen cover, and the raw material inlet is provided at the right side of the pressure screen cover.
Further preferably, the width of the shank is 10 to 20mm.
More preferably, the clearance between the drum and the screen hub is 3-5 mm, and the thickness of the shank is 0.5-1.5 mm smaller than the clearance.
Compared with the prior art, the invention has the following beneficial effects:
according to the annular screen, the shin bars are arranged in the screen hub of the annular screen, so that aggregation of filiform substances in the annular screen is effectively avoided, the filiform substances are timely discharged from the bottom of the annular screen, the risk of stopping the rotary drum due to blockage is eliminated, and the production efficiency is improved; the screen cloth and the inside of screen cloth hub all are fixed through bolted connection spare, are convenient for install and maintenance.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the shank of FIG. 1;
FIG. 3 is a view of the structure of the shank of FIG. 1;
FIG. 4 is a schematic view of the structure of a pressure screen;
in the figure: 1. the screen hub 2, the shank 3, the upper flange 4, the upper compression ring 5, the upper rib 6, the middle flange 7, the lower shank 8, the lower compression ring 9, the lower flange 10, the screen 11, the pressure screen 12, the rotary drum 13, the rotary drum main shaft 14, the slurry outlet pipe 15, the slurry outlet pipe 16, the frame 17, the rotary drum belt pulley 18, the belt 19, the motor belt pulley 20, the motor 21, the pressure screen cover 22, the raw material inlet 23 and the light slag outlet.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
the present invention is further illustrated by the following examples, which are not intended to be limiting, but any modifications, equivalents, improvements, etc. within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Examples
As shown in fig. 1, the annular screen comprises a screen hub 1 which is vertically arranged, wherein a shank bar 2 is arranged on the inner surface of the screen hub 1, and the shank bar 2 starts from the top to the bottom of the screen hub 1. When the sieve is in operation, tiny filars rotate along the inner wall of the sieve hub 1 and are subjected to downward reaction force of the tibia 2 when touching the tibia 2, and the tiny filars are discharged from the bottom of the sieve hub 1 along the direction of the tibia 2, so that the accumulation of the filars in the sieve hub 1 is effectively avoided.
In this embodiment, the shank 2 disposed in the hub 1 surrounds the inner surface of the hub 1 for a complete revolution. When installed, the rotation direction of the shank 2 coincides with the rotation direction of the drum 12.
The screen hub 1 consists of an upper flange 3, an upper compression ring 4, an upper rib 5, a middle flange 6, a lower shank 7, a lower compression ring 8, a lower flange 9 and a screen 10; an upper pressing ring 4 is arranged below the upper flange 3, and the upper pressing ring 4 is connected with an intermediate flange 6 through an upper rib 5; a lower compression ring 8 is arranged on the lower flange 9, and the lower compression ring 8 is connected with the middle flange 6 through a lower shank 7; the upper edge of the screen cloth 10 is fixed between the upper flange 3 and the upper press ring 4, and the lower edge of the screen cloth 10 is fixed between the lower flange 9 and the lower press ring 8; as shown in fig. 1, 2 and 3, the upper compression ring 4, the upper ribs 5, the middle flange 6, the lower shin 7 and the lower compression ring 8 are mutually connected from top to bottom to form an annular frame, the upper compression ring 4 is connected with the upper flange 3 through bolts, the lower compression ring 8 is connected with the lower flange 9 through bolts, and when the screen 10 is damaged, the screen 10 can be replaced by disassembling the connecting bolts, so that the screen is convenient and quick.
The outer side surface of the shank 2 is provided with 3 cylindrical bulges, the 3 cylindrical bulges are provided with corresponding threaded holes, the 3 cylindrical bulges penetrate through the screen 10, are respectively embedded in the upper flange 3, the middle flange 6 and the lower flange 9 from top to bottom and are fastened through bolts; during installation, the tibialis 2 is inlayed on upper flange 3, intermediate flange 6 and lower flange 9 through 3 cylinder arches on outside surface to through bolted connection, this kind of connected mode is convenient for change the tibialis 2 of scrapping, has reduced the maintenance work of equipment.
When the annular screen is applied to the pressure screen, the pressure screen comprises a vertically arranged pressure screen body 11, the pressure screen body 11 is of a barrel-shaped structure, a good pulp outlet pipe 14 is connected to the middle of the left side of the pressure screen body 11, a slag pulp outlet pipe 15 is connected to the bottom of the left side of the pressure screen body 11, a pressure screen cover 21 used for sealing is connected to an opening of the pressure screen body 11, a light slag outlet 23 is arranged at the top of the pressure screen cover 21, a raw material inlet 22 is formed in the side face of the pressure screen cover 21, a screen hub 1 is installed in the pressure screen body 11, a shank bar 2 is arranged in the screen hub 1, a rotary drum main shaft 13 is arranged along the center line of the screen hub 1, a rotary drum 12 is fixed on the rotary drum main shaft 13, the rotary drum 12 is arranged in the screen hub 1, the upper end of the rotary drum main shaft 13 is installed on the pressure screen cover 21 through a bearing, and the lower half section of the rotary drum main shaft 13 is installed at the bottom of the pressure screen body 11 through the bearing; the pressure screen has a simple structure, avoids the phenomenon of stopping caused by blocking of the annular screen, and improves the production efficiency.
The bottom of the pressure screen body 11 is provided with a frame 16, the side surface of the pressure screen body 11 is provided with a motor 20, the lower end of the rotary drum main shaft 13 is provided with a rotary drum belt pulley 17, the main shaft end of the motor 20 is provided with a motor belt pulley 19, and the rotary drum belt pulley 17 is connected with the motor belt pulley 19 through a belt 18; the transmission mode is adopted, so that the cost is low, and the maintenance is convenient.
The light slag outlet 23 is arranged at the left side of the top of the pressure screen cover 21, and the raw material inlet 22 is arranged at the right side of the pressure screen cover 21. Under the technical design of the section, the mixing of raw materials and separated light slag is effectively avoided.
In operation, as shown in FIG. 4, the pressure screen and motor 20 are mounted on the frame 16, and the motor 20 transmits power to the pressure screen via the belt 18 to separate and extract fibers from the feedstock.
When the pressure screen specifically works, raw materials enter the rotary drum 12 from a raw material inlet 22 on the side face of a pressure screen cover 21, the rotary drum 12 breaks the raw materials under the drive of a rotary drum main shaft 13, part of coarse slag is discharged from the bottom of the rotary drum 12 and finally discharged from a slag slurry outlet pipe 15, some fine filiform substances enter the annular screen hub 1 through the rotary drum 12, required fiber slurry passes through the inner surface of the screen hub 1 and is discharged from a fine slurry outlet pipe 14, and the rest of fine filiform substances rotate along the inner wall of the screen hub 1.
In practical application, considering the characteristics of raw materials, the shank 2 is made of stainless steel with chromed surface, and the technology is wear-resistant in use; the width of the shank 2 is 10-20 mm, the abrasion is accelerated due to the too narrow width, the service life is shortened, the excessive width can reduce the overflow area of the screen 10, and the extraction rate of the good pulp is reduced; when the clearance value between the rotary drum 12 and the screen hub 1 is 3-5 mm, the value is the optimal clearance for separating and extracting fibers in the raw materials; the thickness of the shank 2 is 0.5-1.5 mm less than the clearance value, which ensures that the drum 12 does not rub against the shank 2 during rotation, the specific dimensions being chosen according to the diameter of the screen hub 1.
In application, the width of the shank 2 can be any value of 10-20 mm, and the clearance between the rotary drum 12 and the screen hub 1 can be any value of 3-5 mm, so can the thickness of the shank 2.
The foregoing has shown and described the basic principles, main features and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. An annular screen, includes screen hub (1) of vertical setting, its characterized in that: the inner surface of the screen hub (1) is provided with a shank (2), and the shank (2) starts from the top to the bottom of the screen hub (1);
the shin bar (2) arranged in the screen hub (1) surrounds the inner surface of the screen hub (1) for a whole circle;
the pressure screen comprises a pressure screen body (11) which is vertically arranged, the pressure screen body (11) is of a barrel-shaped structure, a good pulp outlet pipe (14) is connected to the middle of the left side of the pressure screen body (11), a slurry outlet pipe (15) is connected to the bottom of the left side of the pressure screen body (11), a pressure screen cover (21) used for sealing is connected to the opening of the pressure screen body (11), a light slurry outlet (23) is arranged at the top of the pressure screen cover (21), a raw material inlet (22) is formed in the side face of the pressure screen cover (21), a screen hub (1) is arranged in the pressure screen body (11), a shank bar (2) is arranged in the screen hub (1), a rotary drum main shaft (13) is arranged at the center line of the screen hub (1), a rotary drum (12) is fixed on the rotary drum main shaft (13), the upper end of the rotary drum main shaft (13) is arranged in the screen hub (1) through a bearing, and the lower half section of the rotary drum main shaft (13) is arranged at the bottom of the pressure screen body (11) through the bearing;
the width of the shank (2) is 10-20 mm;
the clearance value between the rotary drum (12) and the screen hub (1) is 3-5 mm, and the thickness of the shank (2) is 0.5-1.5 mm smaller than the clearance value.
2. The annular screen of claim 1 wherein: the screen hub (1) consists of an upper flange (3), an upper compression ring (4), an upper rib (5), a middle flange (6), a lower shank (7), a lower compression ring (8), a lower flange (9) and a screen (10); an upper compression ring (4) is arranged below the upper flange (3), and the upper compression ring (4) is connected with the middle flange (6) through an upper rib (5); a lower compression ring (8) is arranged on the lower flange (9), and the lower compression ring (8) is connected with the middle flange (6) through a lower shank (7); the upper edge of the screen (10) is fixed between the upper flange (3) and the upper pressing ring (4), and the lower edge of the screen (10) is fixed between the lower flange (9) and the lower pressing ring (8).
3. The annular screen of claim 2 wherein: the outer side face of the shank (2) is provided with 3 cylindrical bulges, the 3 cylindrical bulges are provided with corresponding threaded holes, the 3 cylindrical bulges penetrate through the screen (10), and are respectively inlaid in the upper flange (3), the middle flange (6) and the lower flange (9) from top to bottom and are fastened through bolts.
4. Use of an annular screen according to claim 1 in a pressure screen, characterized in that: the pressure screen body (11) bottom is provided with frame (16), is provided with motor (20) in pressure screen body (11) side, and rotary drum belt pulley (17) are installed to the lower extreme of rotary drum main shaft (13), and motor belt pulley (19) are installed to main shaft end department of motor (20), and rotary drum belt pulley (17) are connected through belt (18) with motor belt pulley (19).
5. Use of an annular screen according to claim 1 in a pressure screen, characterized in that: the light slag outlet (23) is arranged at the left side of the top of the pressure screen cover (21), and the raw material inlet (22) is arranged at the right side of the pressure screen cover (21).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810780564.XA CN108677583B (en) | 2018-07-17 | 2018-07-17 | Annular screen and application thereof in pressure screen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810780564.XA CN108677583B (en) | 2018-07-17 | 2018-07-17 | Annular screen and application thereof in pressure screen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108677583A CN108677583A (en) | 2018-10-19 |
| CN108677583B true CN108677583B (en) | 2023-09-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810780564.XA Active CN108677583B (en) | 2018-07-17 | 2018-07-17 | Annular screen and application thereof in pressure screen |
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Citations (21)
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|---|---|---|---|---|
| CA887765A (en) * | 1969-11-21 | 1971-12-07 | Cowan Ben | Pulp screening machine |
| SU1335602A1 (en) * | 1984-12-21 | 1987-09-07 | Архангельский лесотехнический институт им.В.В.Куйбышева | Fibrous mass sorting apparatus |
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| CN101718051A (en) * | 2009-10-30 | 2010-06-02 | 山东杰锋机械制造有限公司 | Improved screen drum |
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| CN206625080U (en) * | 2017-04-01 | 2017-11-10 | 安徽山鹰纸业股份有限公司 | A kind of paper production line pulping system |
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| CN206625080U (en) * | 2017-04-01 | 2017-11-10 | 安徽山鹰纸业股份有限公司 | A kind of paper production line pulping system |
| CN107142770A (en) * | 2017-05-31 | 2017-09-08 | 瑞安市金邦喷淋技术有限公司 | The ring flange of paper machine screen cylinder and the attachment structure of diversion screen rod |
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| CN108677583A (en) | 2018-10-19 |
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