CN106480770B - A kind of composite pressure sieve - Google Patents
A kind of composite pressure sieve Download PDFInfo
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- CN106480770B CN106480770B CN201611204365.1A CN201611204365A CN106480770B CN 106480770 B CN106480770 B CN 106480770B CN 201611204365 A CN201611204365 A CN 201611204365A CN 106480770 B CN106480770 B CN 106480770B
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- sieve
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Classifications
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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
- D21D5/06—Rotary screen-drums
-
- 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
- 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
Abstract
The invention discloses a kind of composite pressure sieves, it includes pressurized screen shell and is placed in the intracorporal screening structure of pressurized screen shell, pressurized screen shell includes setting gradually level-one screening shell, transitional shell and second level screening shell, level-one from the bottom to top to screen shell, transitional shell and second level and screen the coaxial setting of shell；Screening structure includes being placed in the intracorporal level-one screening rotor of level-one screening shell and being placed in the intracorporal second level screening rotor of second level screening shell, and level-one screens rotor and second level screens the coaxial setting of rotor, and its central axes is overlapped with the central axes of pressurized screen shell；It is board-like rotor that level-one, which screens rotor, and the sieve plate being matched therewith is provided with below board-like rotor, and it is cylindrical rotor that second level, which screens rotor, and the cylinder screen frame being matched therewith is arranged with outside cylindrical rotor.The present invention realizes two-stage screening, can effectively remove the big specification impurity in paper pulp in the thick slurry stage.
Description
Technical field
The present invention relates to pressure sieve apparatus more particularly to a kind of composite pressure to sieve.
Background technique
Pressurized screen is a kind of equipment screened by pressure pulse, it is widely used in the slurrying stream of paper industry
The contaminant filters such as silt particle, metallic particles, plastics, rubber in paper pulp can be come out, while filter out qualified fiber by journey, be
A kind of widely applied slurrying is screened and purified equipment.
At this stage, pressurized screen is used as in domestic paper industry Pulping Line, most popular to be screened and purified equipment, skill
Art is increasingly mature, and the also technology transfer since most of domestic manufacturer is gradually transitions technological innovation, in all its bearings to pressure
Power sieve makes the adjustment for being more suitable for domestic papermaking enterprise.
Since current China largely uses waste paper pulp-making, the large granular impurity content in raw material is high, increases to slurrying
The abrasion of equipment reduces the service life of equipment.Therefore as early as possible to separate impurity from paper pulp, for improving
Service life of equipment reduces installed power, guarantees that the key indexes such as quality of finished paper play an important role.
Summary of the invention
The present invention in order to solve the problems in the prior art, provides a kind of composite pressure sieve, realizes two-stage screening,
The thick slurry stage can effectively remove the big specification impurity in paper pulp.
In order to solve the above technical problems, it includes pressurized screen the present invention adopts the following technical scheme: a kind of composite pressure sieves
Shell screens shell including setting gradually level-one from the bottom to top with the intracorporal screening structure of pressurized screen shell, the pressurized screen shell is placed in
Body, transitional shell and second level screen shell, and level-one screens shell, transitional shell and second level and screens the coaxial setting of shell, and level-one
The diameter of screening shell was greater than the diameter of second level screening shell, and transitional shell is that level-one is screened to shell and second level screening shell
The taper type structure being smoothly connected；
The screening structure includes being placed in the intracorporal level-one screening rotor of level-one screening shell and being placed in second level screening shell
Second level screen rotor, level-one screens rotor and second level and screens the coaxial setting of rotor, and in its central axes and pressurized screen shell
Axis is overlapped；It is board-like rotor that level-one, which screens rotor, is provided with the sieve plate being matched therewith below board-like rotor, sieve plate is fixed
Set on the bottom of level-one screening shell, level-one sieve pore is equipped on sieve plate；The board-like rotor and sieve plate form level-one screening and tie
Structure forms level-one screening areas between the two；
It is cylindrical rotor that second level, which screens rotor, and the cylinder screen frame being matched therewith, cylinder screen frame are arranged with outside cylindrical rotor
It is fixedly connected with second level screening shell, second level sieve pore is equipped on cylinder screen frame；The cylindrical rotor and cylinder screen frame form two
Grade screening structure, forms secondary screening area domain between the two；
The lower section that level-one screens shell is equipped with the room bottom Liang Jiang, and the bottom room Liang Jiang passes through the level-one sieve pore and level-one on sieve plate
Screening areas connection；It is respectively equipped with stock inlet and weight slag discharge outlet on level-one screening shell, second level screens the lower part of shell and upper
Portion is respectively arranged with the good slurry mouth of second level and tailings discharge outlet.
The taper that upper and lower ends opening is installed in the transitional shell adjusts lid, and taper adjusts radially inside setting for lid
Set one group of size degradation blade, the size degradation knife is uniformly arranged around the central axis that taper adjusts lid, each size degradation blade with cone
Shape adjusts lid and is fixedly connected.
The taper, which adjusts to be detachably fixed at the open topped covered, is connected with starching adjusting ring, and taper adjusts the top of lid
The open through-hole by starching adjusting ring is connected to secondary screening area domain；Liquid level observation is provided on the second level screening shell
Window.
The board-like rotor is board-like disc structure, and circumferencial direction is evenly equipped with cambered blade；The sieve plate is disc
Structure, sieve plate upper side are fixed with the wear-resisting tool section of radial length and short wear-resisting tool section, and long wear-resisting tool section and short wear-resisting tool section are equal
It is uniformly arranged around the central axes of sieve plate, and long wear-resisting tool section and short wear-resisting tool section arranged for interval.
The cylindrical rotor includes cylinder and uniformly distributed in the shape of a spiral blade on the outer tube wall of cylinder, blade and Cylindorical rod
Line has certain angle；The second level sieve pore is uniformly distributed on the barrel of cylinder screen frame.
The blade is that the inverted l-shaped structure formed is connected with vertical section by traversing section, and the vertical section and cylinder axis have one
The direction at clamp angle, the traversing section is opposite with the direction of rotation of cylindrical rotor and tilts upwards.
Dilution water pipe is additionally provided in the transitional shell, dilution water pipe sequentially passes through transitional shell and taper adjusts lid.
The good slurry mouth of the second level and tailings discharge outlet are located at the opposite sides of second level screening shell；
The slurry stream direction for screening enclosure interior into slurry direction and level-one of the stock inlet is tangent；At the heavy slag discharge outlet
It is provided with regulating gate；
The good slurry mouth of level-one is arranged on the room the bottom Liang Jiang.
Power device is provided with below the room the bottom Liang Jiang, power device includes main shaft and the company of coaxial arrangement
Spindle, main shaft sequentially passes through the bottom room Liang Jiang, second level screening shell and sieve plate and board-like rotor is sequentially connected, board-like rotor
It is sequentially connected between cylindrical rotor by connecting shaft；Main shaft and connecting shaft are an integral structure.
It is close that the connecting portion cooperation of the main shaft and the bottom room Liang Jiang, second level screening shell and sieve plate is equipped with anti-leak
Envelope.
Beneficial effects of the present invention:
The present invention realizes two-stage screening, can effectively remove the big specification impurity in paper pulp in the thick slurry stage, reduce to rear
The loss of continuous equipment.Composite pressure sieve of the invention can be realized the high-efficient homework that coarse sizing and impurity dehydration are carried out to slurry,
The tailings of discharge is dense, without other enrichment equipment.The present invention improves place utilization rate, reduces integral device
Installed power, while reducing the fiber loss of slag removal, and only need to adjust feed pressure and be just able to achieve simple control.
The working principle of the invention is: paper pulp tangentially enters from the stock inlet above level-one screening housing bottom sieve plate,
Under the action of board-like rotor, the good slurry of the first order enters the bottom room Liang Jiang by sieve plate, is discharged as good slurry, heavy seeds are arranged from weight slag
Put mouth discharge.
Board-like rotor generates centrifugal force effect cleaning level-one sieve pore, and (grows resistance to sharpening with the tool section being arranged on sieve plate
Item and short wear-resisting tool section) effect, so that paper pulp is obtained the effect of discongesting.Fiber-impurity the mixed liquor stayed on sieve plate is acted in pressure
Under continuously rise to the second level screening areas on top, in the rotary course of cylindrical rotor component, fiber-impurity mixed liquor quilt
Washing and dehydration, acceptable fiber and washing water are discharged by cylinder screen frame as good slurry, and impurity continues up conveying, are arranged from tailings
Mouth is put to be discharged as tailings.
The board-like rotor and sieve plate form level-one and screen structure, form level-one screening areas between the two, slurry is one
Screening effect of the grade screening areas by level-one screening structure, qualified fiber and a part of water are sieved by the level-one on sieve plate
Hole is discharged into the bottom room Liang Jiang through the good slurry mouth of level-one, and intransitable heavy seeds, such as stone, iron wire pass through weight slag discharge
The continuous discharge of mouth, does not enter back into screening process, reduces the loss to follow-up equipment.
Board-like rotor is board-like disc structure, and circumferencial direction is evenly equipped with cambered blade, and the blade is right in rotary course
Slurry plays the role of preferably discongesting, while will not generate fragmentation to fragment, the large granular impurity in slurry, ensure that miscellaneous
Integrality when matter is discharged, reduces the load of follow-up equipment.
The sieve plate upper side is fixed with the wear-resisting tool section of radial length and short wear-resisting tool section, long wear-resisting tool section and short wear-resisting
Tool section is uniformly arranged around the central axes of sieve plate, and long wear-resisting tool section and short wear-resisting tool section arranged for interval, and above-mentioned design is in sieve plate
Screening areas in form wear-resisting tool section different in size, in the rotary course of board-like rotor, blade and wear-resisting tool section are mutual
Effect cutting long fibre, makes it be easier to pass through sieve pore；Simultaneously because the pressure that board-like rotor generates, screens the level-one of composite screen
Obtain higher throughput.
The cylindrical rotor and cylinder screen frame form second level and screen structure, form secondary screening area domain, level-one between the two
Screening areas inner part does not pass through slurry that level-one sieve pore is discharged under pressure, moves upwards into secondary screening area domain,
Into the slurry in secondary screening area domain, by the dehydration of cylindrical rotor, most water and fiber all pass through drum sieve
The second level sieve pore of frame is drained through the good slurry mouth of second level, and remaining dewatered impurity water content is extremely low, can be very easily from tailings
Discharge outlet discharge.
Described to be evenly equipped with blade in the shape of a spiral on the outer tube wall of cylindrical rotor, blade and axis have certain angle, blade
To connect the inverted l-shaped structure formed with vertical section by traversing section, the vertical section and cylinder axis have certain angle, the traversing section
Direction is opposite with the direction of rotation of cylindrical rotor and tilts upwards, and the higher impurity of mass dryness fraction can be delivered up by above-mentioned design.
Elongated screen slot is uniform-distribution on the barrel of screen frame, under the dehydration of cylindrical rotor, qualified fiber and washing water pass through
Screen slot is discharged through the good slurry mouth of second level.
The taper that upper and lower ends opening is installed in the transitional shell adjusts lid, and taper adjusts radially inside setting for lid
Set one group of size degradation blade, the size degradation knife is uniformly arranged around the central axis that taper adjusts lid, each size degradation blade with cone
Shape adjusts lid and is fixedly connected, and size degradation blade collects pockets of fibre bundle to wadding and plays the role of preferable size degradation.It is arranged at this simultaneously
Dilution water pipe, booster action is played to the size degradation of fibre bundle.
Detachable at the open topped of the taper adjusting lid to be fixedly connected with starching adjusting ring, taper adjusts the upper of lid
Portion's opening adjusts the through-hole on ring by starching and is connected to secondary screening area domain, can be according to the content of impurity in raw material and dense
Degree, the starching for replacing different size adjust ring (through-hole diameter that starching is adjusted on ring is different), and adjusting is transported to secondary screening area
The slurry velocity in domain remains at the dehydration rate of cylindrical rotor in suitable range, has no effect on level-one screening areas
It operates normally.For auxiliary adjustment function, it is provided with observation window of liquid level on second level screening shell, second level can be observed directly
The height of liquid level of shell is screened, and ring is adjusted to starching in time and is adjusted.
Detailed description of the invention
Fig. 1 is structural schematic diagram of the invention；
The structural schematic diagram of board-like rotor in Fig. 2 present invention；
Fig. 3 is the structural schematic diagram of sieve plate in the present invention；
Fig. 4 is the structural schematic diagram of cylindrical rotor in the present invention；
Fig. 5 is the structural schematic diagram of cylinder screen frame in the present invention；
Fig. 6 is the structural schematic diagram that taper adjusts lid in the present invention.
Specific embodiment
It elaborates below in conjunction with attached drawing to a specific embodiment of the invention, the arrow in Fig. 2 indicates board-like rotor
Direction of rotation, the arrow in Fig. 4 indicates the direction of rotation of cylindrical rotor.
As shown in Figures 1 to 6, a kind of composite pressure of the invention sieve, it includes pressurized screen shell and is placed in pressure screen shell
Intracorporal screening structure, a kind of composite pressure sieve of pressure, it includes pressurized screen shell and is placed in the intracorporal sieve of pressurized screen shell
Structure is selected, the pressurized screen shell includes setting gradually level-one screening shell 1, transitional shell 3 and second level screening shell from the bottom to top
Body 2, level-one screens shell 1, transitional shell 3 and second level and screens the coaxial setting of shell 2, and the diameter of level-one screening shell 1 is greater than
The diameter of second level screening shell 2 is crossed, transitional shell 3 is that level-one is screened to the frustum that shell 1 and second level screening shell 2 are smoothly connected
Shape structure.
The screening structure includes the level-one screening rotor being placed in level-one screening shell 1 and is placed in second level screening shell
Second level screen rotor, level-one screens rotor and second level and screens the coaxial setting of rotor, and in its central axes and pressurized screen shell
Axis is overlapped.
It is board-like rotor 11 that level-one, which screens rotor, and the lower section of board-like rotor 11 is provided with the sieve plate 12 being matched therewith, and is sieved
Plate 12 is fixed at the bottom of level-one screening shell 1, is equipped with level-one sieve pore on sieve plate 12；The board-like rotor 11 and sieve plate 12
It forms level-one and screens structure, form level-one screening areas between the two.
The board-like rotor 11 is board-like disc structure, and circumferencial direction is evenly equipped with high inclination-angle cambered blade.The blade exists
Play the role of preferably discongesting to slurry in rotary course, while fragment, the large granular impurity in slurry will not be generated broken
Effect ensure that integrality when impurity discharge, reduce the load of follow-up equipment.
The sieve plate 12 is disc-shaped structure, and 12 upper side of sieve plate is fixed with the wear-resisting tool section 16 of radial length and short wear-resisting
Tool section 15, long wear-resisting tool section 16 and short wear-resisting tool section 15 are uniformly arranged around the central axes of sieve plate 12, and it is long it is resistance to whet a knife 15 and
Short 15 arranged for interval of wear-resisting tool section.Above-mentioned design forms wear-resisting tool section different in size in the screening areas of sieve plate 12, in plate
In the rotary course of formula rotor, blade and wear-resisting tool section interact and cut long fibre, it is made to be easier to pass through sieve pore；Simultaneously because
The pressure that board-like rotor 11 generates screens the level-one of composite screen and obtains higher throughput.
It is cylindrical rotor 21 that second level, which screens rotor, is arranged with the cylinder screen frame 22 being matched therewith outside cylindrical rotor 21, circle
Shaft screen frame 22 is fixedly connected with second level screening shell 2, and second level sieve pore is equipped on cylinder screen frame 22；The cylindrical rotor 21 and circle
Shaft screen frame 22 forms second level and screens structure, forms secondary screening area domain between the two.
The cylindrical rotor 21 includes cylinder 25 and uniformly distributed in the shape of a spiral blade 26 on the outer tube wall of cylinder 25, blade
26 have certain angle with cylinder axis.The blade 26 is that the inverted l-shaped structure formed is connected with vertical section by traversing section, this is vertical
Section has certain angle with cylinder axis, and the direction of the traversing section is opposite with the direction of rotation of cylindrical rotor and tilts upwards.It is above-mentioned
The higher impurity of mass dryness fraction can be delivered up by blade design.
The second level sieve pore is uniformly distributed on the barrel of cylinder screen frame 22, under the dehydration of cylindrical rotor 21, is closed
The fiber and washing water of lattice are discharged by second level sieve pore through the good slurry mouth 23 of second level.
The taper that upper and lower ends opening is installed in the transitional shell 3 adjusts lid 5, and taper adjusts the upper and lower ends of lid 5
Sealing ring is arranged in portion and transitional shell 3, avoids slurry into gap between the two.Taper adjusts radially inside setting for lid 5
One group of size degradation blade 51 is set, the size degradation blade 51 is uniformly arranged around the central axis that taper adjusts lid 5, each size degradation blade
51, which adjust lid 5 with taper, is fixedly connected.Size degradation blade collects pockets of fibre bundle to wadding and plays the role of preferable size degradation.
It is detachably fixed at the open topped of the taper adjusting lid 5 and is connected with starching adjusting ring 52, taper adjusts lid 5
Open topped adjusts the through-hole on ring 52 by starching and is connected to secondary screening area domain, can according to the content of impurity in raw material and
Concentration, the through-hole diameter replaced on the starching adjusting ring 52(starching adjusting ring of different size are different), adjusting is transported to second level sieve
The slurry velocity of favored area remains at the dehydration rate of cylindrical rotor 21 in suitable range, has no effect on level-one screening
The normal operation in region.For auxiliary adjustment function, it is provided with observation window of liquid level 8 on second level screening shell 2, can directly be seen
The height of liquid level of second level screening shell 2 is observed, and ring 52 is adjusted to starching in time and is adjusted.
Dilution water pipe 53 is additionally provided in the transitional shell 3, dilution water pipe 53 sequentially passes through transitional shell 3 and taper tune
Lid 5 is saved, the dilution water pipe 53 being arranged at this plays booster action to the size degradation of fibre bundle.
The lower section that level-one screens shell 1 is equipped with the room bottom Liang Jiang 4, and the bottom room Liang Jiang 4 passes through the level-one sieve pore on sieve plate 12
It is connected to level-one screening areas, the good slurry mouth 41 of level-one is arranged in the bottom room Liang Jiang 4.
Be respectively equipped with stock inlet 13 and weight slag discharge outlet 14 on level-one screening shell 1, stock inlet 13 into slurry direction and one
Slurry stream direction inside grade screening shell 1 is tangent；Weight slag discharge outlet 14 is provided with regulating gate, regulating gate 17 in the present embodiment
For the pneumatic discharge gate of intermittent folding, realize that weight slag is discharged in consecutive intervals.
The lower part and top of second level screening shell 2 are respectively arranged with the good slurry mouth 23 of second level and tailings discharge outlet 24, and second level is good
Slurry mouth 23 and tailings discharge outlet 24 are located at the opposite sides of second level screening shell.
Be provided with power device 6 below the room the bottom Liang Jiang, power device 6 include coaxial arrangement main shaft and
Connecting shaft, main shaft sequentially passes through the bottom room Liang Jiang 4, second level screening shell 2 and sieve plate 12 and board-like rotor 11 is sequentially connected,
It is sequentially connected between board-like rotor 11 and cylindrical rotor 21 by connecting shaft；Transmission shaft and connecting shaft are an integral structure.
The main shaft and the connecting portion cooperation of the bottom room Liang Jiang 4, second level screening shell 2 and sieve plate 12 are equipped with anti-let out
Leakage sealing, leak-tight seal are no longer described in detail using existing mature technology, the present embodiment and attached drawings such as mechanical seals.
In this implementation, entire pressurized screen shell is supported on ground by plant bottom case 7.
The working principle of the invention is: paper pulp from level-one screening 1 extraction plate 12 of shell above stock inlet 13 tangentially into
Enter, under the action of board-like rotor 11, the good slurry of the first order enters the room bottom Liang Jiang 4 by sieve plate 12, is discharged as good slurry, weight is miscellaneous
Matter is discharged from weight slag discharge outlet 14.
Board-like rotor 11 generates centrifugal force effect cleaning level-one sieve pore, and (grows resistance to the tool section being arranged on sieve plate 12
Sharpening item 16 and short wear-resisting tool section 15) effect, so that paper pulp is obtained the effect of discongesting.The fiber stayed on sieve plate-impurity mixed liquor exists
The second level screening areas on top is continuously risen under pressure effect, in the rotary course of 21 component of cylindrical rotor, fiber-is miscellaneous
Matter mixed liquor is washed and dehydration, acceptable fiber and washing water are discharged by cylinder screen frame 22 as good slurry, and impurity continues up
Conveying is discharged from tailings discharge outlet 24 as tailings.
The board-like rotor 11 forms level-one with sieve plate 12 and screens structure, forms level-one screening areas, slurry between the two
In screening effect of the level-one screening areas by level-one screening structure, qualified fiber and a part of water pass through one on sieve plate 11
Grade sieve pore is discharged into the bottom room Liang Jiang 4 through the good slurry mouth 41 of level-one, and intransitable heavy seeds, such as stone, iron wire pass through weight
Slag discharge outlet 14 is continuously discharged, and does not enter back into screening process, reduces the loss to follow-up equipment.
The cylindrical rotor 21 forms second level with cylinder screen frame 22 and screens structure, forms secondary screening area domain between the two,
Level-one screening areas inner part does not pass through slurry that level-one sieve pore is discharged under pressure, moves upwards into secondary screening area
Domain, into the slurry in secondary screening area domain, by the dehydration of cylindrical rotor 21, most water and fiber all pass through circle
The second level sieve pore of shaft screen frame 22 is drained through the good slurry mouth 23 of second level, and remaining dewatered impurity water content is extremely low, can be very convenient
Slave tailings discharge outlet 24 discharge.
The present invention realizes two-stage screening, can effectively remove the big specification impurity in paper pulp in the thick slurry stage, reduces
Loss to follow-up equipment.Composite pressure sieve of the invention can be realized the efficient work that coarse sizing and impurity dehydration are carried out to slurry
The tailings of industry, discharge is dense, without other enrichment equipment.The present invention improves place utilization rate, reduces whole set
Standby installed power, while reducing the fiber loss of slag removal, and only need to adjust feed pressure and be just able to achieve simply
Control.
The above embodiments are only used to illustrate and not limit the technical solutions of the present invention, although referring to above-described embodiment to this hair
It is bright to be described in detail, those skilled in the art should understand that: still the present invention can be modified or be waited
With replacement, without departing from the spirit or scope of the invention, or any substitutions, should all cover in power of the invention
In sharp claimed range.
Claims (9)
1. a kind of composite pressure sieve, it includes pressurized screen shell and is placed in the intracorporal screening structure of pressurized screen shell, it is characterised in that:
The pressurized screen shell includes setting gradually level-one screening shell, transitional shell and second level screening shell, level-one sieve from the bottom to top
Shell, transitional shell and the second level screening coaxial setting of shell are selected, and the diameter of level-one screening shell is greater than second level screening shell
Diameter, transitional shell are that level-one is screened to the taper type structure that shell and second level screening shell are smoothly connected；
The screening structure includes being placed in the intracorporal level-one screening rotor of level-one screening shell and being placed in second level to screen shell intracorporal two
Grade screening rotor, level-one screens rotor and second level screens the coaxial setting of rotor, and the central axes of its central axes and pressurized screen shell
It is overlapped；It is board-like rotor that level-one, which screens rotor, is provided with the sieve plate being matched therewith below board-like rotor, sieve plate is fixed at
Level-one screens the bottom of shell, is equipped with level-one sieve pore on sieve plate；The board-like rotor and sieve plate formation level-one screening structure, two
Level-one screening areas is formed between person；
It is cylindrical rotor that second level, which screens rotor, and the cylinder screen frame being matched therewith, cylinder screen frame and two are arranged with outside cylindrical rotor
Grade screening shell is fixedly connected, and second level sieve pore is equipped on cylinder screen frame；The cylindrical rotor and cylinder screen frame form second level sieve
Structure is selected, forms secondary screening area domain between the two；
The lower section that level-one screens shell is equipped with the room bottom Liang Jiang, and the bottom room Liang Jiang is screened by the level-one sieve pore on sieve plate with level-one
Regional connectivity；It is respectively equipped with stock inlet and weight slag discharge outlet on level-one screening shell, second level screens the lower part and upper part of shell
It is not provided with the good slurry mouth of second level and tailings discharge outlet；
The taper that upper and lower ends opening is installed in the transitional shell adjusts lid, and taper adjusts radially inside setting one of lid
Group size degradation blade, the size degradation insert ring are uniformly arranged around the central axis that taper adjusts lid, and each size degradation blade is and taper
Lid is adjusted to be fixedly connected.
2. composite pressure sieve according to claim 1, it is characterised in that: the taper adjusts removable at the open topped of lid
The formula of unloading is fixedly connected with starching and adjusts ring, and the through-hole that the open topped that taper adjusts lid is adjusted by starching on ring is screened with second level
Regional connectivity；Observation window of liquid level is provided on the second level screening shell.
3. -2 described in any item composite pressure sieves according to claim 1, it is characterised in that: the board-like rotor is board-like disk
Structure, circumferencial direction are evenly equipped with cambered blade；The sieve plate is disc-shaped structure, and sieve plate upper side is fixed with radial length
Wear-resisting tool section and short wear-resisting tool section, long wear-resisting tool section and short wear-resisting tool section are uniformly arranged around the central axes of sieve plate, and length is wear-resisting
Tool section and short wear-resisting tool section arranged for interval.
4. composite pressure according to claim 3 sieve, it is characterised in that: the cylindrical rotor includes cylinder and in cylinder
Blade uniformly distributed in the shape of a spiral on outer tube wall, blade and cylinder axis have certain angle；The second level sieve pore is in cylinder screen frame
It is uniformly distributed on barrel.
5. composite pressure sieve according to claim 4, it is characterised in that: the blade is to be connected by traversing section with vertical section
The inverted l-shaped structure of composition, the vertical section and cylinder axis have certain angle, the direction of the traversing section and the rotation side of cylindrical rotor
To opposite and tilt upwards.
6. composite pressure sieve according to claim 4, it is characterised in that: be additionally provided with dilution water in the transitional shell
Pipe, dilution water pipe sequentially passes through transitional shell and taper adjusts lid.
7. composite pressure according to claim 4 sieve, it is characterised in that: the good slurry mouth of the second level and tailings discharge outlet are distinguished
Positioned at the opposite sides of second level screening shell；
The slurry stream direction for screening enclosure interior into slurry direction and level-one of the stock inlet is tangent；It is arranged at the heavy slag discharge outlet
There is regulating gate；
The good slurry mouth of level-one is arranged on the room the bottom Liang Jiang.
8. composite pressure sieve according to claim 4, it is characterised in that: the lower section setting of the room the bottom Liang Jiang is dynamic
Device, power device include the main shaft and connecting shaft of coaxial arrangement, and main shaft sequentially passes through the bottom room Liang Jiang, level-one sieve
It selects shell and sieve plate and board-like rotor to be sequentially connected, is sequentially connected between board-like rotor and cylindrical rotor by connecting shaft；Main biography
Moving axis and connecting shaft are an integral structure.
9. composite pressure sieve according to claim 8, it is characterised in that: the main shaft and the room bottom Liang Jiang, level-one
The connecting portion cooperation for screening shell and sieve plate is equipped with leak-tight seal.
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| CN201611204365.1A CN106480770B (en) | 2016-12-23 | 2016-12-23 | A kind of composite pressure sieve |
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|---|---|---|---|---|
| CN107597547B (en) * | 2017-10-27 | 2020-08-07 | 安徽省正宇粮食机械有限公司 | Grain sieve separator |
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| CN113322703A (en) * | 2021-05-10 | 2021-08-31 | 鲍立耀 | Sectional drive type wood cutting device |
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| CN106480770A (en) | 2017-03-08 |
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