CN203530764U - Novel outward flow type medium-consistency pressure screen of screening equipment - Google Patents
Novel outward flow type medium-consistency pressure screen of screening equipment Download PDFInfo
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- CN203530764U CN203530764U CN201320732805.6U CN201320732805U CN203530764U CN 203530764 U CN203530764 U CN 203530764U CN 201320732805 U CN201320732805 U CN 201320732805U CN 203530764 U CN203530764 U CN 203530764U
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- 238000012216 screening Methods 0.000 title abstract description 9
- 239000002002 slurry Substances 0.000 claims abstract description 38
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052802 copper Inorganic materials 0.000 claims abstract description 4
- 239000010949 copper Substances 0.000 claims abstract description 4
- 238000005461 lubrication Methods 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 8
- 238000012856 packing Methods 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 230000008676 import Effects 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 239000006260 foam Substances 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000008021 deposition Effects 0.000 abstract 1
- 239000000835 fiber Substances 0.000 description 24
- 238000010790 dilution Methods 0.000 description 7
- 239000012895 dilution Substances 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 241000202567 Fatsia japonica Species 0.000 description 3
- 229920002472 Starch Polymers 0.000 description 3
- 235000019698 starch Nutrition 0.000 description 3
- 239000008107 starch Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000033001 locomotion Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000007306 turnover Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 238000013036 cure process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
A novel outward flow type medium-consistency pressure screen of screening equipment adopts a vertical structure and mainly comprises a transmission device, a cylinder, a cylinder cover, a screen cylinder, a rotary cylinder and a base, wherein the detachable cylinder cover is mounted at the top end of the cylinder; the cylinder and an electric motor are fixed on the base through bolts; the cylinder adopts an upright cylinder and provided with a slurry inlet, an accepted stock outlet, a slagging outlet and a deposition outlet; the screen cylinder is fixed on a round flanged base in the cylinder through screws and adopts a bar type slotted screen cylinder; the rotary cylinder and a bearing are mounted in the screen cylinder, and the bearing adopts a mechanical seal; a pipe end bracket is arranged on the base; a sealed water inlet, a sealed water outlet and a bearing lubrication inlet are connected with the mechanical seal and the bearing through copper tubes respectively; and the transmission device comprises the electric motor, a belt pulley, a belt and a transmission shaft. Compared with a conventional centrifugal screen, the mounting is simple, the operation is easy, the productive maintenance cost is lower, no foam is produced, and the production capacity is high.
Description
Technical field
The utility model relates to a kind of lathe, especially Novel screen optional equipment outflow medium-consistency pressure screen.
Background technology
In order to guarantee quality of finished paper, prevent that production equipment from being damaged or stopping up by the impurity in slurry, must remove the fiber impurity in slurry and dirt.Dense screening installation in paper pulp, is current domestic most popular a kind of picking equipment, is applicable to heat screening, the fine screen choosing of wood pulp, reed pulp or straw pulp.But current pressurized screen production maintenance cost is high, easily produces foam, and production capacity has much room for improvement.
Utility model content
The technical problem that the application will solve is to overcome above-mentioned defect, and a kind of Novel screen optional equipment outflow medium-consistency pressure screen is provided.
For solving the problems of the technologies described above, the technical scheme of employing is:
Novel screen optional equipment outflow medium-consistency pressure screen, pressurized screen is vertical structure, mainly by transmission device, cylindrical shell, cover, screen cylinder, revolve cylindrical shell, base forms, and cylinder top is equipped with dismountable cover, and cover is comprised of the spherical end socket of stainless steel and flange, with double-screw bolt, be connected with cylindrical shell, core is equipped with Valve joint, and cylindrical shell and motor are bolted on base, cylindrical shell is upright cylinder, is provided with stock inlet, good slurry outlet, slag-drip opening and precipitum outlet, be screwed screen cylinder on the circular flange seat in cylindrical shell, and screen cylinder is rod formula seam shape screen cylinder, in screen cylinder the inside, installed and revolved cylindrical shell and bearing, the sealing of bearing adopts mechanical seal, and pipe end bracket is arranged on base, by copper tube handle sealing water entrance, bearing lubrication import is connected with mechanical seal and bearing respectively, and transmission device is by motor, belt pulley, belt, power transmission shaft forms, and power transmission shaft is fixed on base by two cover bearings, by motor, passes through belt pulley, one group narrow V-type joint group belt drives, the center line of belt pulley and narrow V-type joint group belt is on same center line, and there are adjustment packing ring, belt pulley band tapered sleeve in belt pulley top.
The beneficial effects of the utility model are: compare with traditional screen centrifuge, have install simple, easy operating, production maintenance expense lower, can not produce foam, production capacity is high.
Accompanying drawing explanation
Fig. 1 is dense pressurized screen fundamental diagram in being;
Fig. 2 is dense pressurized screen basic block diagram in being; L mono-transmission device, 2 one cylindrical shells, 3 one screen cylinders, 4-revolves cylindrical shell, 5-cover, 6-base;
Fig. 3 is the structural representation in the hole of screen cylinder sieve plate;
Fig. 4 is that screen cylinder is slotted screen cross-sectional view;
Fig. 5 is hole sizer rotor structure;
Fig. 6 is slotted screen rotor structure figure;
Fig. 7 is transmission device belt pulley scheme of installation; 7-motor pulley, the narrow V-type joint group of 8-belt, 9-adjusts packing ring.
The specific embodiment
See Fig. 1.Slurry tangentially enters the separation chamber, top of pressurized screen, and does top-down movement, because impurity is different from fibre density, impurity separated settling down under the effect of centrifugal force that quality is larger, discharges from precipitum outlet.Slurry sieves to stitch by the pressure differential overflow inside and outside screen cylinder and enters screen cylinder downwards and revolve the screening area between cylinder, acceptable fiber is stitched by good slurry grout outlet and is drawn by sieve, the slag slurry of staying in screen cylinder is discharged through tailings mouth under the promotion of slurry pressure and rotor bump, from the dilution water pipe of scum pipe top, adds dilution water.The screen cylinder inner side clockwise drum surface of High Rotation Speed is welded with many projections, and during rotation, every projection trailing edge place all produces local decompression, thereby plays the effect of purifier sieve seam.
Pressurized screen is vertical structure, mainly by transmission device, cylindrical shell, cover, screen cylinder, revolve cylindrical shell, base etc. and form (seeing Fig. 2).The flange connecting has been installed on pressurized screen cylindrical shell, dismountable lid is equipped with on top, cylindrical shell and motor are bolted on base, screen cylinder is housed in cylindrical shell, in screen cylinder the inside, installed and revolved cylindrical shell and bearing, the sealing of transmission main shaft adopts mechanical seal, and the part contacting with slurry all adopts stainless steel material.Pipe end bracket is arranged on position suitable on base, by copper tube, sealing water entrance, bearing lubrication import is connected with mechanical seal and bearing respectively.Cylindrical shell rolls welding with corrosion resistant plate and makes, and is upright cylinder, is provided with stock inlet, good slurry outlet, slag-drip opening and precipitum outlet.In flow process, good slurry is discharged by discharge pipe by screen cylinder.Thick slurry, slurry group and other impurity fall into the endless groove of cylindrical shell bottom, through slag-drip opening, discharge.Than the impurity that fiber quality is large, by the precipitum outlet of bottom land minimum point, by artificial, regularly discharged.Inside have circular flange seat, in order to screen cylinder to be installed, drive bearing is arranged on the base plate of housing, the pulp-inlet pipe of tangential direction is arranged at top, and there is good slurry outlet in portion on the lower side, and scum pipe and dilution water pipe are arranged at bottom, Pressure gauge is all housed on each mouth of pipe, is used to indicate turnover slurry pressure in cylindrical shell.Cover is comprised of the spherical end socket of stainless steel and flange, is connected with double-screw bolt with cylindrical shell, and core is equipped with Valve joint, with the light impurity that discharges residual gas in cylindrical shell and may occur.Screen cylinder is the vitals of pressurized screen, is also consumable accessory.Directly seat is in cylindrical shell for screen cylinder, and upper end is flange face, in the pressed on ring of screen cylinder, is drilled with several screws.With screw, screen cylinder is fixed on cylindrical shell.The bottom surrounding of screen cylinder is that cone must closely cooperate with cylinder body bottom, must not have space, otherwise slurry can flow out along space, sneaks in the outdoor good slurry of screening.
Screen cylinder has board-like circle hole shape screen cylinder and two kinds of forms of rod formula seam shape screen cylinder.It is the diameter d of sieve aperture and the distance f of sieve aperture (seeing Fig. 3) that traditional circle hole shape screen cylinder has two essential characteristics, and according to these 2 areas of determining whole screen cylinder sieve aperture, the ratio with total perforated area and total screen cylinder area represents conventionally, claims percent opening.Sieve diameter is generally 1-3mm, and pitch-row is 2-10mm, and percent opening can reach 25% one 30%, but because hole back gauge (t-d) should be greater than maximum fibre length, so percent opening mostly is 10% one 12%, otherwise easily causes the fibrous caking in slurry, even has influence on the normal operation of pulp screen.Screen cylinder percent opening is except depending on fibre length, and also relevant by the speed of sieve aperture with slurry, this speed is no more than 1.0m/s conventionally.Flow velocity is larger, and the easier conglomeration of fiber and formation fibre bundle, stop up sieve aperture.The screen number of screen cylinder unit are is exactly result unified under the condition of these two contradictions.In order not make fiber put up a bridge and hanging on sieve aperture, require percent opening low, high in order to make by the low percent opening that requires of slurry speed of sieve aperture, thereby for different fibers, the definite of screen cylinder percent opening and aperture is very important, generally rule of thumb data are determined.Hole sizer enter to starch concentration and slotted screen to enter to starch concentration the same, be generally 2%-3.5%, but hole sizer need add dilution water, if dilution hydraulic pressure is inadequate, the good slurry adhering to and be entrained on thick fiber cannot be rinsed, sieve plate does not wash clean clearly, easily stick with paste sieve plate, good slurry is discharged not smooth.The structure of rod formula seam shape screen cylinder, is by hundreds of special wedge shape rods, is along the circumferential direction evenly embedded in the groove on multi-layer annular plate circumference (seeing Fig. 4).Slotted screen sieve seam direction is parallel with main shaft, stitches wide 0.1-0.35mm, the centre-to-centre spacing 2-5mm of seam, majority is 3mm, and percent opening mostly is 7%-8%, maximum 20%, but enter to starch concentration, be 2.0%-3.0%, and need not add dilution water, fibre length is between 1.5-3.0mm.Compare with hole sizer, fiber more easily passes through slotted screen.Slotted screen turnover pipeline all seals, and sieve internal pressure differences is larger, and the speed that slurry stitch by sieve is larger, is not less than 1.3m/s, and surperficial sieve of screen cylinder stitch than the more refinement of board-like milling crack structure, and precision is higher.After plating hard chromium on surface cure process, screen cylinder also corresponding raising in service life, is generally 4-6 months, and good slurry output capacity is also high by 20% one 40% than hole sizer.Revolving cylindrical shell is a cylinder, claims again rotor.The rotor of hole sizer is arranged on divergent-cone wall by a plurality of short rotors, is generally 10 above (seeing Fig. 5).Slotted screen rotor outer surface has many projections, also not identical according to the quantity of the different projections of output, is generally 20 above (seeing Fig. 6).When High Rotation Speed, produce the effect that high-frequency impulse plays screening the pulp and purifies sieve aperture.In fibrous suspension, between fiber, there is mutually the effect of sorptive force, these power form fibrolaminar reason exactly on sieve plate.The size that forms fibrolaminar power is decided by sorptive force between fiber, fiber and the sorptive force on sieve plate surface, the pressure head of suspension.In order to keep sieve aperture (seam) unimpeded, must there is external disturbance masterpiece to be used on suspension, destroy established fibrage or stop fibrolaminar formation, when rotor is during along screen cylinder apparent motion, near the head of rotor, the pressure reduction of slurry increases, along with the gap of afterbody and screen cylinder is cumulative, in this region, there is local decompression.When inside and outside the negative pressure producing makes screen cylinder, the absolute value of slurry pressure equates, slurry stops by sieve aperture (seam); When negative pressure continues to increase, the good slurry outside screen cylinder returns in screen cylinder by sieve aperture (seam), and the slurry group and the thick fiber that are attached on sieve aperture (seam) are played to recoil.Like this, guaranteed normally carrying out of screening the pulp work.The reason that Here it is revolves cylindrical shell High Rotation Speed, hole sizer gyroplane rotate speed 250～550r/min, slotted screen gyroplane rotate speed 700～750r/min, the rotating speed of the rotor of pressurized screen hole sizer or slotted screen is relevant with diameter, slurry concentration, projection or type of stock etc. simultaneously.The sealing of revolving an axle adopts mechanical seal, and in order to prevent that slurry is by mechanical seal space and cooling sliding ring, sealing demineralized water is disposed in mechanical seal, and hydraulic pressure should be than the high 0.05-0.1MPa of operating pressure.Hole sizer rotor is different from slotted screen rotor, because both fibers enter, screen cylinder mode is different to be determined, fibre length and sieve diameter are more or less the same, the mode of fiber enter hole sieve enters in screen cylinder mainly with horizontal straight line, thereby hole sizer rotor is the sheet that comes into leaves, be more conducive to wipe off fiber, be convenient to flowing of fiber.Slotted screen fiber enters in screen cylinder mainly with vertical bar shaped straight line mode of entrance, and the rotor of slotted screen is that many projections (general 20-30) are distributed in regularly and revolve drum surface, produces pulse during rotor wing rotation, is convenient to wipe off the fiber that enters screen cylinder.Transmission device is comprised of motor, belt pulley, belt, power transmission shaft etc.Power transmission shaft is fixed on bearing block by two cover bearings, by motor, passes through belt pulley, one group narrow V-type joint group belt drives.During installation, the center line of two belt pulleys must be on same center line, otherwise can affect the service life of belt, therefore above belt pulley, has designed adjustment packing ring.For the ease of dismounting, belt pulley is designed to the form with tapered sleeve.Screen cylinder of the same area, hole sizer production capacity is 3.57 times of slotted screen.Along with the raising day by day that paper quality index (dust) is required, also stricter to the requirement of screening installation.The seam minimum of slotted screen can be worked into 0.1mm, is generally at present 0.2mm, has reached the requirement of modern paper plant to good slurry index.The dense range of application of slurry of novel slotted screen is 2.0%-3.5%, and releases rare water without adding, in densely enter slurry, adapted to the requirement of modern paper plant, output is generally 100t/ (dm2) left and right, may be different in different slurries kind and different process situation.The power consumption of slotted screen is generally 1～1.5kW/t slurry, because the sieve of slotted screen seam is than little many of hole sizer, therefore quite the slotted screen of model generally exceeds 20～30kW than the power of motor of hole sizer; In addition, the dilution water yield of hole sizer is slotted screen 2-3 times, can not meet the water saving needs of paper plant.Compare with hole sizer, the energy consumption of slotted screen is slightly high, and conservation benefits is obvious.
Claims (1)
1. Novel screen optional equipment outflow medium-consistency pressure screen, is characterized in that: pressurized screen is vertical structure, mainly by transmission device, cylindrical shell, cover, screen cylinder, revolve cylindrical shell, base forms, and cylinder top is equipped with dismountable cover, and cover is comprised of the spherical end socket of stainless steel and flange, with double-screw bolt, be connected with cylindrical shell, core is equipped with Valve joint, and cylindrical shell and motor are bolted on base, cylindrical shell is upright cylinder, is provided with stock inlet, good slurry outlet, slag-drip opening and precipitum outlet, be screwed screen cylinder on the circular flange seat in cylindrical shell, and screen cylinder is rod formula seam shape screen cylinder, in screen cylinder the inside, installed and revolved cylindrical shell and bearing, the sealing of bearing adopts mechanical seal, and pipe end bracket is arranged on base, by copper tube handle sealing water entrance, bearing lubrication import is connected with mechanical seal and bearing respectively, and transmission device is by motor, belt pulley, belt, power transmission shaft forms, and power transmission shaft is fixed on base by two cover bearings, by motor, passes through belt pulley, one group narrow V-type joint group belt drives, the center line of belt pulley and narrow V-type joint group belt is on same center line, and there are adjustment packing ring, belt pulley band tapered sleeve in belt pulley top.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320732805.6U CN203530764U (en) | 2013-11-19 | 2013-11-19 | Novel outward flow type medium-consistency pressure screen of screening equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320732805.6U CN203530764U (en) | 2013-11-19 | 2013-11-19 | Novel outward flow type medium-consistency pressure screen of screening equipment |
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| CN203530764U true CN203530764U (en) | 2014-04-09 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245402A (en) * | 2016-09-19 | 2016-12-21 | 杭州诺邦无纺股份有限公司 | Wet method spun lacing special conical turbine disperser and the method for dispersion coma |
-
2013
- 2013-11-19 CN CN201320732805.6U patent/CN203530764U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106245402A (en) * | 2016-09-19 | 2016-12-21 | 杭州诺邦无纺股份有限公司 | Wet method spun lacing special conical turbine disperser and the method for dispersion coma |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: WEI QIANG Free format text: FORMER OWNER: SICHUAN GUANXIANG TECHNOLOGY CO., LTD. Effective date: 20150715 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| C56 | Change in the name or address of the patentee |
Owner name: SICHUAN GUANXIANG TECHNOLOGY CO., LTD. Free format text: FORMER NAME: SICHUAN DISCOVERY DREAM ELECTRONICS SCIENCE + TECHNOLOGY CO., LTD. |
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| CP01 | Change in the name or title of a patent holder |
Address after: 610000, No. 399, west section of Chang Xiong Road, Chengdu hi tech Zone, Sichuan Patentee after: Sichuan Guanxiang Science and Technology Co.,Ltd. Address before: 610000, No. 399, west section of Chang Xiong Road, Chengdu hi tech Zone, Sichuan Patentee before: SICHUAN DISCOVERY DREAM ELECTRONICS SCIENCE & TECHNOLOGY Co.,Ltd. |
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| TR01 | Transfer of patent right |
Effective date of registration: 20150715 Address after: 610041 Sichuan city of Chengdu province Wuhou District Ximianqiao Street No. 21 South Fuk 15 Floor Patentee after: Wei Qiang Address before: 610000, No. 399, west section of Chang Xiong Road, Chengdu hi tech Zone, Sichuan Patentee before: Sichuan Guanxiang Science and Technology Co.,Ltd. |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150923 Address after: 610000, No. 399, west section of Chang Xiong Road, Chengdu hi tech Zone, Sichuan Patentee after: Sichuan Guanxiang Science and Technology Co.,Ltd. Address before: 610041 Sichuan city of Chengdu province Wuhou District Ximianqiao Street No. 21 South Fuk 15 Floor Patentee before: Wei Qiang |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |