CN110629579B - Novel high-concentration double-zone rotor - Google Patents
Novel high-concentration double-zone rotor Download PDFInfo
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- CN110629579B CN110629579B CN201910978900.6A CN201910978900A CN110629579B CN 110629579 B CN110629579 B CN 110629579B CN 201910978900 A CN201910978900 A CN 201910978900A CN 110629579 B CN110629579 B CN 110629579B
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- shell
- slag inlet
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- 239000002002 slurry Substances 0.000 claims abstract description 45
- 238000012216 screening Methods 0.000 claims abstract description 41
- 239000002893 slag Substances 0.000 claims description 76
- 238000005192 partition Methods 0.000 claims description 15
- 238000003466 welding Methods 0.000 claims description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 14
- 239000010959 steel Substances 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 8
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 3
- QNRATNLHPGXHMA-XZHTYLCXSA-N (r)-(6-ethoxyquinolin-4-yl)-[(2s,4s,5r)-5-ethyl-1-azabicyclo[2.2.2]octan-2-yl]methanol;hydrochloride Chemical compound Cl.C([C@H]([C@H](C1)CC)C2)CN1[C@@H]2[C@H](O)C1=CC=NC2=CC=C(OCC)C=C21 QNRATNLHPGXHMA-XZHTYLCXSA-N 0.000 claims 1
- 230000009977 dual effect Effects 0.000 claims 1
- 238000005265 energy consumption Methods 0.000 abstract description 8
- 239000000835 fiber Substances 0.000 description 16
- 239000007788 liquid Substances 0.000 description 13
- 238000007599 discharging Methods 0.000 description 8
- 239000013049 sediment Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229920000742 Cotton Polymers 0.000 description 4
- 238000010790 dilution Methods 0.000 description 4
- 239000012895 dilution Substances 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 230000008719 thickening Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention relates to the technical field of screening equipment, in particular to a novel high-concentration double-area rotor which has high energy consumption and cannot solve the problem of high concentration of good slurry.
Description
Technical Field
The invention relates to the technical field of screening equipment, in particular to a novel high-concentration double-region rotor.
Background
The rotor is mainly applied to a large screening equipment pressure screen in a screening stage in the pulping and papermaking industry; the traditional cylindrical pressure screen rotor is generally provided with a shaft sleeve, an end socket, a cylinder body and a protruding block, the cylinder body is of a sealed cylinder structure, the protruding blocks are arranged outside the cylinder body according to a certain rule, the slurry inevitably generates a thickening phenomenon in the whole screening length from screening slurry inlet to coarse slag discharge, and the thickening phenomenon is mainly caused by the fact that water has larger mobility through screen holes or screen gaps than fibers, so that the phenomenon is relieved, more protruding blocks are required to be designed at the lower part of the rotor, and more dilution water is added to enable the concentration of good slurry to be reduced, so that the ideal screening effect is achieved.
However, the number of the projections at the lower part of the rotor of the existing cylinder is large, the rotor is relatively large in liquid resistance in the process of rotating in liquid, so that the energy consumption is increased, and the consumption of black liquor is increased due to the addition of a large amount of dilution water.
The Chinese patent CN 207452562U discloses a novel pressure screen rotor, which comprises a cylindrical rotor body, pulse convex blocks which are uniformly and symmetrically distributed are arranged on the outer circumferential surface of the rotor body, a screen cylinder which forms an annular screening area together with the outer circumferential surface of the rotor body is arranged outside the outer circumferential surface of the rotor body, and long holes which divide the annular screening area into a first screening area and a second screening area are formed in the rotor body above a transmission baffle.
The rotor has a large flow area in the rotor during operation, resulting in a large resistance to rotating the slurry, thereby increasing energy consumption.
Disclosure of Invention
Aiming at the situation, in order to overcome the defects of the prior art, the invention provides the novel high-concentration double-area rotor, solves the problems that the energy consumption of the existing rotor is large and the concentration of the slurry is too high on the premise of not increasing the protruding blocks on the surface of the rotor.
The technical proposal is that the novel high-concentration double-area rotor comprises an outer shell with a plurality of protruding blocks on the outer surface, each protruding block is arranged on the outer shell in an array way, an annular screening area is jointly formed between a screen cylinder arranged outside the rotor and the outer shell, one end of the outer shell is provided with a seal head with a central opening, the seal head bulges towards a direction far away from the inner part of the rotor, the connecting position of the rotor can be lifted so as to leave enough space to adapt to a transmission system, the top of the seal head is provided with an exhaust hole, the central position of the seal head is provided with a shaft sleeve and is sunk into the inner part of the rotor through the opening, the seal head and the shaft sleeve are welded and formed, the shaft sleeve is welded and formed by a seal head part, the phenomenon that the rotor connected by bolts is blocked by threads under the action of high torque force is avoided, an inner cylinder body coaxial with the outer shell is arranged in the outer shell, the arrangement of the inner cylinder reduces the space for flowing the slurry, thereby reducing the resistance caused by the turbulent flow of the slurry, reducing the energy loss, connecting one end of the inner cylinder with the seal head, extending the other end of the inner cylinder to the middle position of the outer shell, arranging a baffle between one end of the inner cylinder far away from the seal head and the outer shell, connecting the baffle with the inner cylinder and forming a first opening with the outer shell, connecting the baffle with a lower cylinder corresponding to the inner cylinder, forming a space with the outer shell and smooth inner wall without cotton hanging on the outer surface of the lower cylinder, arranging a long hole-shaped slurry inlet and a diamond-shaped coarse slag inlet on the surface of the outer shell in sequence in a staggered way, arranging a guide plate for guiding the slurry from the coarse slag inlet to the lower half part of the rotor between the coarse slag inlet and the baffle, arranging a guide bar at one end of the long hole close to the seal head, the separator is provided with a second inlet for slurry to enter the rotor, slurry entering the rotor through the second inlet synchronously rotates along with the movement of the rotor in a space formed by the inner cylinder body and the outer shell, the outer surface of the inner cylinder body and the inner surface of the outer shell are smooth so as to ensure that the wall surface of the space formed by the inner cylinder body and the outer shell is smooth and is not hung with cotton, a coarse slag inlet shell which is convenient for coarse slag to enter the coarse slag inlet is arranged outside each diamond-shaped coarse slag inlet, and the outer surface of the coarse slag inlet cover is streamline.
Still further, the axle sleeve is formed by anticorrosive stainless steel material processing, the axle sleeve supplies the pressure screen transmission shaft to pass through, realize tight fit in order to reach the mesh of the rotatory moment of torsion of transmission rotor through setting up the tight cover that expands between axle sleeve and the pressure screen transmission shaft, the hole processing of axle sleeve is connected with the tight cover adaptation that expands, and the tight cover that expands is held tightly with the pressure screen transmission shaft.
Furthermore, the guide strip is formed by rolling a steel plate strip to reduce the resistance of slurry flowing, the radian of the inner surface of the guide strip is completely adhered to the outer surface of the outer shell and is fixed with the outer shell in a welding mode, the guide strip is higher than the bottom surface of the coarse slag inlet shell, and the distance between the guide strip and the bottom surface of the coarse slag inlet shell is 20-25 mm.
Furthermore, each guide plate is formed by cutting after bending a square steel plate, two bending surfaces of each guide plate are triangular and form an included angle larger than 90 degrees with the main plate, a space formed after bending each guide plate completely covers a diamond-shaped coarse slag inlet on the outer shell, an opening formed between the lower part of the guide plate and the outer shell corresponds to the opening formed between the baffle plate and the outer shell, and a smooth channel for coarse slag to flow from the coarse slag inlet to a B screening area of the lower half part of the rotor is formed.
Still further, each coarse slag inlet shell is formed by welding an arc-shaped plate and two triangular plates, each triangular plate comprises an arc-shaped long side and two short sides which are perpendicular to each other, the arc-shaped long side of each triangular plate is fixedly welded with the arc-shaped plate, one short side of each coarse slag inlet shell is welded on the outer surface of the shell and corresponds to each coarse slag inlet on the shell one by one, the coarse slag inlet shells are consistent so as to be matched with the coarse slag inlets, and the connection parts of the coarse slag inlet shells and the coarse slag inlets on the surface of the shell are smooth, have no steps and sharp corners, and ensure that cotton is not hung.
Still further, the height of each coarse slag inlet shell is lower than the height of the convex block, and the height of each coarse slag inlet is lower than the height of the convex block by 1mm-2mm.
Still further, the shell body is formed by steel plate coiling welding and is welded with the head, and the inside and outside all machining of shell body guarantees that the wall thickness is even unanimous, interior barrel is by steel plate material coiling back welding shaping and with head welded fastening, and interior barrel is when welding with the head, keeps concentricity with the shell body, down the barrel by corrosion-resistant steel plate material coiling welding shaping to with the baffle by corrosion-resistant material steel plate cutting shaping through welded mode fixed connection, the baffle is with rotor inside segmentation upper and lower two parts, and the upper half is served as the inner wall by interior barrel, and the lower half is served as the inner wall by lower barrel.
Furthermore, the second inlets are multiple, each second inlet is arranged at the edge of the sealing head at equal intervals in a ring shape around the center of the sealing head and is uniformly distributed circumferentially, and the sum of the opening areas of the slurry inlets in the area B on the outer shell is not smaller than the sum of the opening areas of the second inlets on the sealing head, so that slurry can not be retained in the cavity to cause blockage or unsmooth circulation due to the fact that the inlet area is large and the outlet area is small.
Furthermore, each lug is formed by casting corrosion-resistant steel, and when the rotor rotates, the lug and the screen cylinder form a working area, so that continuous screening work can be ensured.
The inside of the rotor is divided into two parts by a baffle plate, the upper half part of the rotor with the inner cylinder body is a screening area A, the lower half part of the rotor with the lower cylinder body is a screening area B, and after the slurry containing fibers and slag enters the pressure screen cavity, the slurry is divided into two parts by the mode of entering the rotor and respectively enters the screening area A and the screening area B.
The flow of the liquid slurry entering the screening area A is as follows: after the slurry enters the pressure screen cavity, in the screening area A, qualified fibers and black liquor enter a slurry tube through a screen slot, and the remaining slag and unqualified fibers continue to be precipitated downwards; when the slag and unqualified fibers reach the upper surface of the guide strip, the rotary rotor brings the slag and fibers into the diamond slag inlet, and the slag and fibers enter the space formed by the outer shell and the lower cylinder at the lower half part of the rotor after passing through the channel formed between the coarse slag inlet and the partition plate by the guide plate, and finally reach the slag discharging area at the bottom;
The flow of the liquid slurry entering the screening area B is as follows: the slurry enters the space formed between the inner cylinder body and the outer shell body in the rotor cavity from a plurality of second inlets on the rotor seal head, is discharged to a B screening area from a B area slurry inlet on the surface of the outer shell body, qualified fibers and black liquor can enter a good slurry pipe through a screening seam, and the remaining slag and unqualified fibers continue to be deposited downwards to a slag discharging area at the bottom of the rotor.
The invention has the technical effects that the rotor is internally provided with the inner cylinder body, the partition plate and the lower cylinder body, the rotor is internally divided into two parts, the original whole screening area is divided into an upper layer and a lower layer by different flow directions of liquid pulp, the height from pulp feeding to slag discharging areas of each layer is reduced, the shortened distance is half of the original design, the aim of obviously thickening the pulp is fulfilled on the premise of not increasing the number of the outer convex blocks of the rotor, in addition, dilution water is not needed to be injected in addition, the rotor can adapt to the pulp with higher concentration, the core screening function is met, the average energy consumption is low, the usage amount of diluted black liquor can be greatly reduced, the energy is saved, the environment is protected, and the energy consumption is less.
Drawings
Fig. 1 is a schematic diagram of the structure of the present invention.
Fig. 2 is a schematic view of the slurry flow path structure of the present invention.
Fig. 3 is a schematic top view of the present invention.
FIG. 4 is a schematic diagram of the crude slag inlet shell structure of the invention.
FIG. 5 is a schematic view of a baffle structure according to the present invention.
The device comprises a shaft sleeve, a sealing head, an outer shell, an inner cylinder, a coarse slag inlet shell, a guide plate, a lug, a lower cylinder, guide strips, a partition plate, a first opening, a second inlet, a screen cylinder, a slurry inlet in a region 14, a coarse slag inlet and a slag discharging region, wherein the shaft sleeve, the sealing head, the outer shell, the inner cylinder, the coarse slag inlet shell, the guide plate, the lug and the lower cylinder, the guide strip, the partition plate, the first opening, the second inlet, the screen cylinder, the slurry inlet in the region 14, the coarse slag inlet and the slag discharging region. A screening zone, 18.B screening zone.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that, in the description of the present invention, terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate directions or positional relationships, which are based on the directions or positional relationships shown in the drawings, are merely for convenience of description, and do not indicate or imply that devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," "fourth," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Furthermore, it should be noted that, in the description of the present invention, 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 mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention can be understood by those skilled in the art according to the specific circumstances.
Embodiment one: the novel high-concentration double-area rotor comprises an outer shell 3 with a plurality of protruding blocks 7 on the outer surface, wherein each protruding block 7 is arranged on the surface of the outer shell 3, each protruding block 7 is arranged on the surface of the outer shell 3 in an array manner, an annular screening area is jointly formed between a screen cylinder arranged outside the rotor and the outer shell 3, a seal head 2 with a center hole is arranged at one end of the outer shell 3, the seal head 2 bulges towards a direction away from the interior of the rotor, the connecting position of the rotor can be raised, sufficient space is conveniently reserved for adapting to a transmission system, an exhaust hole is arranged at the top of the seal head 2, a shaft sleeve 1 is arranged at the center position of the seal head 2 and is sunk into the interior of the rotor through the hole, the seal head 2 and the shaft sleeve 1 are welded and formed, the shaft sleeve is welded and formed by a seal head part, the phenomenon that the screw thread of the rotor connected by bolts is blocked under the action of high torque force is avoided, an inner cylinder 4 coaxial with the outer casing 3 is arranged in the outer casing 3, the space for flowing slurry is reduced by the arrangement of the inner cylinder 4, so that resistance caused by slurry turbulence is reduced, energy loss is reduced, one end of the inner cylinder 4 is connected with the sealing head 2, the other end of the inner cylinder 4 extends to the middle position of the outer casing 3, a partition board 10 is arranged between one end of the inner cylinder 4 far away from the sealing head and the outer casing 3, the partition board 10 is connected with the inner cylinder 4 and forms a first opening 11 with the outer casing 3, the partition board is connected with a lower cylinder 8 corresponding to the inner cylinder 4, the outer surface of the lower cylinder 8 is smooth and forms a space with the outer casing, the surface of the outer casing 3 is orderly provided with a long hole-shaped slurry inlet in a B area and a diamond-shaped coarse slag inlet in a staggered manner, the thick liquid that gets into the rotor through the second entry is provided with the second entry that supplies thick liquid to get into in the rotor near the head 2 surface between inner tube 4 and the shell body 3 between baffle 10 and be provided with the guide plate 6 that is used for guiding thick liquid to rotor lower half from thick liquid import, the slot hole is close to the one end of head 2, the thick liquid that gets into the rotor through the second entry is in the space that inner tube and shell body formed with the shell body synchronous rotation along with rotor motion, and the surface of inner tube 4 and the internal surface of shell body 3 are smooth in order to guarantee that the space wall that both forms is smooth and does not hang cotton, each the thick sediment import of diamond is equipped with the thick sediment import shell 5 that is convenient for thick sediment to get into thick sediment inlet outward, thick sediment import shell 5 outward appearance is streamlined.
Embodiment two: in an embodiment, the axle sleeve 1 is processed by corrosion-resistant stainless steel material and forms, axle sleeve 1 supplies the pressure sieve transmission shaft to pass through, realize tight fit through setting up the tight cover that expands between axle sleeve 1 and the pressure sieve transmission shaft in order to reach the purpose of the rotatory moment of torsion of transmission rotor, the hole processing of axle sleeve 1 is connected with the tight cover adaptation that expands, the tight cover that expands is embraced tightly with the pressure sieve transmission shaft, shell body 3 is rolled up round by the steel sheet and welded fastening with the head, the equal machining in the inside and outside of shell body 3 guarantees that the wall thickness is even unanimous, inner tube 4 is rolled up round by the steel sheet material and welded fastening with the head, inner tube 4 keeps concentric with shell body 3 when welding with the head, lower tube 8 is rolled up round by corrosion-resistant steel sheet material welded fastening to with the baffle 10 of being cut into by corrosion-resistant material steel sheet and be fixed connection through the mode of welding, baffle 10 divides into rotor inside upper and lower two parts, and upper half is served as the inner wall by inner tube 8, and lower half is served as the inner wall by lower tube 8.
Embodiment III: in the above embodiment, the guide strips 9 are formed by rolling steel strips to reduce the resistance of slurry flowing, the radian of the inner surface of each guide strip 9 is completely adhered to the outer surface of the outer shell 3 and is fixed to the outer shell 3 in a welding manner, the guide strips 9 are higher than the bottom surface of the coarse slag inlet shell, the distance between each guide strip 9 and the bottom surface of the coarse slag inlet shell is 20mm-25mm, each guide strip 6 comprises a rectangular steel plate which is bent and then cut to form, the bent plate surface is triangular and inclines in the direction away from the rectangular main plate to form an included angle larger than 90 degrees with the main plate, the space formed after the guide strips 6 are bent completely covers the coarse slag inlet in a diamond shape on the outer shell 3, the lower part of the coarse slag inlet is completely in contact with the opening formed between the partition plate 10 and the outer shell, a smooth channel for coarse slag to flow from the coarse slag inlet to the lower half part of the rotor is formed, each coarse slag inlet shell 5 is formed by combining and welding a triangular plate and two triangular plates, each triangular plate comprises a long side and two sides perpendicular to each other, the triangular plate surface is formed by welding the short sides of one arc line, the triangular plate surface is not in line with the outer shell 3, the height of the coarse slag inlet shell is not matched with the outer shell 3, and the height of the coarse slag inlet is not matched with the triangular shell 3, and the height of the coarse slag inlet is ensured to be equal to the height of the outer shell 3.
In the above embodiment, the number of the second inlets is plural, each of the second inlets is arranged at the edge of the seal head 2 at equal intervals around the center of the seal head in a ring shape, and is uniformly distributed circumferentially, and the sum of the opening areas of the long hole-shaped B-area slurry inlets 14 for slag discharge on the outer shell is not smaller than the sum of the opening areas of the second inlets 12 on the seal head 2, so as to keep the slurry from blocking or flowing unsmoothly due to the slurry retention in the cavity caused by the large inlet area and small outlet area.
In the above embodiment, each of the protrusions 7 is formed by casting a corrosion-resistant steel material, and when the rotor rotates, the protrusions and the screen cylinder form a working area, so that the screening work can be continuously performed.
The inside of the rotor is divided into two parts by a baffle plate, the upper half part of the rotor with the inner cylinder body is a screening area A, the lower half part of the rotor with the lower cylinder body 8 is a screening area B, and after the slurry containing fibers and slag enters the pressure screen cavity, the slurry is divided into two parts by the mode of entering the rotor and respectively enters the screening area A and the screening area B.
The flow of the liquid slurry entering the screening area A is as follows: after the slurry enters the pressure screen cavity, in the screening area A, qualified fibers and black liquor enter a slurry tube through a screen slot, and the remaining slag and unqualified fibers continue to be precipitated downwards; when the slag and unqualified fibers reach the upper surface of the guide strip 9, the rotary rotor brings the slag and fibers into the diamond-shaped B-area slurry inlet, passes through a channel formed between the coarse slag inlet and the partition plate by the guide plate 6, enters a space formed by the outer shell and the lower cylinder 8 at the lower half part of the rotor, and finally reaches the slag discharging area 16 at the bottom;
the flow of the liquid slurry entering the screening area B is as follows: the slurry enters the space formed between the inner cylinder 4 and the outer shell 3 in the rotor cavity from a plurality of second inlets on the rotor head 2, is discharged from a slurry inlet in a long hole-shaped B area on the surface of the outer shell to a B screening area, qualified fibers and black liquor can enter a good slurry pipe through a screening seam, and the remaining slag and unqualified fibers continue to be deposited downwards to a slag discharging area 16 at the bottom of the rotor.
The invention has the technical effects that the rotor is internally provided with the inner cylinder body, the partition plate and the lower cylinder body, the rotor is internally divided into two parts, the original whole screening area is divided into an upper layer and a lower layer by different flow directions of liquid pulp, the height from pulp feeding to slag discharging areas of each layer is reduced, the shortened distance is half of the original design, the aim of obviously thickening the pulp is fulfilled on the premise of not increasing the number of the outer convex blocks of the rotor, in addition, dilution water is not needed to be injected in addition, the rotor can adapt to the pulp with higher concentration, the core screening function is met, the average energy consumption is low, the usage amount of diluted black liquor can be greatly reduced, the energy is saved, the environment is protected, and the energy consumption is less.
The present invention has been described in detail by way of specific embodiments and examples, but these should not be construed as limiting the invention. Many variations and modifications may be made by one skilled in the art without departing from the principles of the invention, which is also considered to be within the scope of the invention.
Claims (9)
1. The novel high-concentration double-zone rotor comprises an outer shell (3) with a plurality of protruding blocks (7) on the outer surface, the protruding blocks (7) are arrayed on the surface of the outer shell (3), an annular screening zone is jointly formed between a screen drum (13) arranged outside the rotor and the outer shell (3), and the novel high-concentration double-zone rotor is characterized in that a seal head (2) with a central opening is formed at one end of the outer shell (3), a shaft sleeve (1) is arranged at the central position of the seal head (2) and is sunk into the rotor through the opening, an inner cylinder (4) coaxial with the outer shell (3) is arranged in the outer shell (3), one end of the inner cylinder (4) is connected with the seal head (2), the other end of the inner cylinder (4) extends to the middle position of the outer shell (3), a partition plate (10) is arranged between one end of the inner cylinder (4) far away from the seal head and the outer shell (3), the partition plate (10) is connected with the inner cylinder (4) and forms a first opening (11) with the outer shell (3), the partition plate is connected with a lower shell (8) corresponding to the inner cylinder (4), the partition plate (3) is provided with a rhombic slag inlet (14) and a coarse slag inlet (6) is arranged on the surface of the coarse slag inlet of the coarse slag separator in turn, the end of the long hole, which is close to the end enclosure (2), is provided with a flow guide strip (9), the surface of the end enclosure (2), which is close to the space between the inner cylinder (4) and the outer shell (3), on the partition board is provided with a second inlet (12) for slurry to enter the rotor, and coarse slag inlet shells (5) which are convenient for coarse slag to enter the coarse slag inlet are arranged outside the coarse slag inlet.
2. The novel high-concentration double-area rotor according to claim 1, wherein the shaft sleeve (1) is used for the transmission shaft of the pressure screen to pass through, and the shaft sleeve (1) and the transmission shaft of the pressure screen are tightly matched through the expansion sleeve to achieve the purpose of transmitting the rotating torque of the rotor.
3. The novel high-concentration double-region rotor according to claim 1, wherein the guide strip (9) is formed by rolling steel strips, the radian of the inner surface of the guide strip (9) is completely attached to the outer surface of the outer shell (3), the guide strip (9) is higher than the bottom surface of the coarse slag inlet shell, and the distance between the guide strip (9) and the bottom surface of the coarse slag inlet shell is 20-25 mm.
4. The novel high-concentration double-region rotor according to claim 1, wherein each guide plate (6) is formed by bending a square steel plate and then cutting, and two bending surfaces of each guide plate are triangular and form an included angle of more than 90 degrees with the main plate.
5. The novel high-concentration double-area rotor according to claim 1, wherein each coarse slag inlet shell (5) is formed by combining and welding an arc-shaped plate and two triangular plates with one arc edge, and each coarse slag inlet shell (5) is welded on the outer surface of the outer shell (3) and corresponds to each diamond-shaped coarse slag inlet on the outer shell (3) one by one.
6. The novel high concentration dual zone rotor of claim 5 wherein each of said coarse slag inlet shells (5) is of a height less than the height of the lugs (7).
7. The novel high-concentration double-area rotor according to claim 1, wherein the outer shell (3) is formed by rolling and welding steel plates with uniform thickness, the inner and outer parts of the outer shell (3) are machined, the inner cylinder (4) is formed by rolling and welding steel plate materials, and the lower cylinder (8) is formed by rolling and welding corrosion-resistant steel plate materials.
8. The novel high-concentration double-zone rotor as claimed in claim 1, wherein a plurality of second inlets (12) are provided, and each second inlet is arranged at the edge position of the sealing head (2) at equal intervals in a ring shape around the center of the sealing head.
9. The novel high-concentration dual-zone rotor of claim 1, wherein each of the lugs (7) is cast from a corrosion-resistant steel material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978900.6A CN110629579B (en) | 2019-10-15 | 2019-10-15 | Novel high-concentration double-zone rotor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910978900.6A CN110629579B (en) | 2019-10-15 | 2019-10-15 | Novel high-concentration double-zone rotor |
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| Publication Number | Publication Date |
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| CN110629579A CN110629579A (en) | 2019-12-31 |
| CN110629579B true CN110629579B (en) | 2024-05-17 |
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| CN201910978900.6A Active CN110629579B (en) | 2019-10-15 | 2019-10-15 | Novel high-concentration double-zone rotor |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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| CN211340206U (en) * | 2019-10-15 | 2020-08-25 | 新乡市新平航空机械有限公司 | Novel high-concentration double-zone rotor |
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| SE525785C2 (en) * | 2003-09-24 | 2005-04-26 | Metso Paper Inc | Thickener for concentrating fiber suspensions |
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| CN201817742U (en) * | 2010-10-12 | 2011-05-04 | 山东杰锋机械制造有限公司 | Coarse screening rotor for waste paper screening |
| CN202131532U (en) * | 2011-06-27 | 2012-02-01 | 山东杰锋机械制造有限公司 | Indraft-type pulping pressure screen |
| EP2816153A1 (en) * | 2013-06-20 | 2014-12-24 | Valmet Technologies, Inc. | Drum element and screen for screening pulp |
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| CN110629579A (en) | 2019-12-31 |
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