CN110404473A - A kind of floating grain de- material system of intelligence - Google Patents

Abstract

The present invention provides a kind of intelligence to float grain de- material system, and it includes drop forming device, cooling equipment and stripper that the intelligence, which floats grain de- material system,；The drop forming device is for providing drop；The cooling equipment includes cooling zone, driving wheel and driven wheel, the cooling zone is rotated around the driving wheel and the driven wheel, the cooling zone is used to drop being cooled into coronal fertiliser granulates, the cooling zone includes feed end and discharge end, the feed end is for receiving the drop, the position that the discharge end refers to the part cooling zone being transmitted at the driven wheel and discharges for the coronal fertiliser granulates；The stripper is arranged close to the discharge end, for splitting away off the coronal fertiliser granulates from the cooling zone.Intelligence provided by the invention floats grain de- material system and does not both need high tower, reduces production cost, produces a kind of coronal fertilizer, while can effectively split away off coronal fertiliser granulates from cooling zone.

Description

A kind of floating grain de- material system of intelligence

Technical field

The present invention relates to technical field of fertilizers, and in particular to a kind of floating grain de- material system of intelligence.

Background technique

The technology of fertilizer production mainly utilizes high-tower granulation to produce at present, and the so-called high-tower granulation is using melting The raw materials such as urea and phosphorus, potassium, mixed slurry is made in the case where being sufficiently mixed, from high tower top spray and under, mixed slurry Drop interacts with the air drag risen from tower bottom, is cooled to after carrying out heat exchange with it during declining from high tower For granulated fertilizer, granular complex fertilizer is obtained after dropping to tower bottom, then screened processing.Purpose using high-tower granulation is to make fertilizer Feed liquid drop is cooled into particle during declining from eminence, but the construction and maintenance of high tower need biggish cost at present, will High tower changes low tower into, and due to the limitation of low tower height degree, the cooling of fertilizer drop is not exclusively or fertilizer mark is not achieved in the particle of formation Standard, and fertilizer shape is single.There is patent report that fertilizer slurry is placed in cooling zone at present cooling, but since fertilizer itself has There is certain viscosity, it is easy to stick not easily to fall off in cooling zone, it can not industrialized production.

Summary of the invention

In view of this, the present invention provides a kind of floating grain de- material system of the intelligence that can effectively deviate from the fertiliser granulates in cooling zone System, specific technical solution are as described below.

A kind of intelligence floats grain de- material system, the intelligence float grain de- material system include drop forming device, cooling equipment and Stripper；The drop forming device is for providing drop；The cooling equipment includes cooling zone, driving wheel and driven wheel, The cooling zone is rotated around the driving wheel and the driven wheel, and the cooling zone is used to drop being cooled into coronal fertilizer Particle, the cooling zone include feed end and discharge end, and for the feed end for receiving the drop, the discharge end refers to biography The part cooling zone being sent at the driven wheel and the position to discharge for the coronal fertiliser granulates；The stripper is close to institute Discharge end setting is stated, for splitting away off the coronal fertiliser granulates from the cooling zone.

Preferably, the stripper includes the scraper plate that falls off, and the discharge end of the cooling zone is arranged in the scraper plate that falls off, And the scraper plate that falls off includes scraper part, the distance between the scraper part and the discharge end are 0-1 millimeters.

Preferably, the driven wheel includes multiple sub- driven wheels, and multiple sub- driven wheels are in periodic arrangement under discharge end Side.

Preferably, the angle of the tangent line and the scraper part of the scraper part and the discharge end intersection is 0-45 °.

Preferably, the lower section of the cooling zone is equipped with multiple bumps, when the cooling zone is sent at driven wheel, institute Bump is stated for ejecting the coronal fertiliser granulates in cooling zone, with the coronal fertiliser granulates that fall off.

Preferably, the dropping device further includes vibration device, and the vibration device includes vibrating motor and vibration section, institute State the lower section that the cooling zone is arranged in vibration section.

Preferably, the vibration section is one of vibrator bar, vibrating reed and vibrating head or a variety of.

Preferably, the cooling belt surface is additionally provided with one of lug boss and recessed portion or two kinds of combinations.

Preferably, the distance between the receiving end and the discharge end are 5-100 meters, and the linear velocity of the cooling zone is 0.2-2 meter per second.

Preferably, the pressure size for the drop that the drop forming device provides is 0.3-1.6MPa, viscosity 1000- 20000 centipoises.

Beneficial effects of the present invention: intelligence provided by the invention floats grain de- material system and does not both need high tower, reduces production Cost produces a kind of coronal fertilizer, while can effectively split away off coronal fertiliser granulates from cooling zone.

Detailed description of the invention

Fig. 1 is the structural schematic diagram that a kind of intelligence provided by the invention floats grain de- material system.

Fig. 2 is the discharge end portion structural schematic diagram that a kind of intelligence provided by the invention floats grain de- material system.

Fig. 3 is the discharge end portion structural schematic diagram that a kind of intelligence provided by the invention floats grain de- material system.

Fig. 4 is the cooling zone partial structure diagram that a kind of intelligence provided by the invention floats grain de- material system.

Fig. 5 is a kind of structural schematic diagram of drop forming device provided by the invention.

Fig. 6 is the structural schematic diagram of the A-A section of Fig. 5.

Specific embodiment

The following is a preferred embodiment of the present invention, it is noted that for those skilled in the art For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as Protection scope of the present invention.Description and claims of this specification and term " first " in the attached drawing, " second " etc. It is to be not use to describe a particular order for distinguishing different objects.In addition, term " includes " and " having " and they are any Deformation, it is intended that cover and non-exclusive include.Such as contain the process, method, system, product of a series of steps or units Or equipment is not limited to listed step or unit, but optionally further comprising the step of not listing or unit, or can Selection of land further includes the other step or units intrinsic for these process, methods, product or equipment.

Referenced herein " embodiment " is it is meant that a particular feature, structure, or characteristic described can wrap in conjunction with the embodiments Containing at least one embodiment of the present invention.Each position in the description occur the phrase might not each mean it is identical Embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art explicitly and Implicitly understand, embodiment described herein can be combined with other embodiments.

Referring to Fig. 1, the present invention provides a kind of floating grain de- material system 10 of intelligence, the intelligence floats grain de- material system 10 and includes Drop forming device 100, cooling equipment 200 and stripper 300.The drop forming device 100 is for providing drop.It can be with Understand, the drop forming device 100, which can be any one, can eject the device of drop.The cooling equipment 200 include cooling zone 210, driving wheel 220 and driven wheel 230, the cooling 210 with around the driving wheel 220 and it is described from Driving wheel 230 rotates, and the cooling zone 210 is used to drop being cooled into coronal fertiliser granulates.It is understood that cooling zone 210 can be the belt of PVC, PU, PE or rubber material, preferably steel band, and steel band absorbs the fast speed of drop heat, To be quickly cooled down drop.The cooling zone 210 includes feed end 211 and discharge end 212, and the feed end 211 is for receiving institute Drop is stated, the discharge end 212 refers to the part cooling zone 210 being transmitted at the driven wheel 230 and is the coronal fertilizer The position of particle discharging.The drop ejected from drop forming device 100 falls in feed end 211, it is preferred that drop is with vertical Positive and negative 45 degree of direction is fallen on feed end 211, and fertiliser granulates hardness after cooling in this way is larger, after drop falls in feed end 211, Under the action of driving wheel and driven wheel, cooling zone is moved to discharge end 212, drop be cooled in moving process formed it is coronal Fertiliser granulates.The stripper 300 is arranged close to the discharge end 212, for by the coronal fertiliser granulates from described cold But it is split away off on band 210.Since fertilizer drop itself has certain viscosity, when drop is fallen in cooling zone, liquid is waved Hair, finally formed coronal fertiliser granulates can be sticky in cooling zone, and coronal fertiliser granulates can not be very when being moved to discharge end It falls off in good slave cooling zone.Stripper 300 in the present invention can take off coronal fertiliser granulates from the cooling zone 210 It falls, to accelerate industrialization production.

Referring to Fig. 2, in a further embodiment, the stripper 300 includes the scraper plate 310 that falls off, described to fall off The discharge end 212 of the cooling zone 210 is arranged in scraper plate 310, and the scraper plate 310 that falls off includes scraper part 311, the scraper The distance between portion 311 and the discharge end 212 are 0-1 millimeters.It is understood that when scraper part 311 and discharge end 212 it Between distance when being 0 millimeter, that is, scraper part 311 and discharge end 212 overlap, but are not fixed, but activity is taken Connect, the cooling zone at discharge end remains to rotate around driven wheel, scraper part 311 at this time because and cooling zone in close proximity to scraping Knife portion the active force of coronal fertiliser granulates is transmitted with cooling zone it is contrary, so can be effectively by coronal fertiliser granulates It falls off from cooling zone.When the distance between scraper part 311 and discharge end 212 are greater than 0 millimeter, scraper part 311 can be by grain The biggish coronal fertiliser granulates of diameter fall off.Adjustment scraper part 311 and discharging can be adapted to according to the fertiliser granulates of different-grain diameter size The distance between end 212.Preferred distance is 0.1-1 millimeters.

In further embodiment, the scraper plate 310 that falls off further includes support portion (not shown), the support portion with it is described Driven wheel 230 is flexibly connected, and the support portion is connect with the scraper part 311, is used to support the scraper part 311.Driven wheel 230 be ceaselessly to rotate in the operating condition, can not both driven wheel be hindered to revolve using being flexibly connected with driven wheel support portion It changes a job work, and can achieve the purpose of support scraper part 311.It is understood that support portion can also be arranged on the ground, with Support scraper part.It is understood that from the fertiliser granulates that scraper part strikes off out by support portion charging material-gathering device.

In a further embodiment, the driven wheel 230 includes multiple sub- driven wheels 231, and multiple sub- driven wheels 231 are in Periodic arrangement is below discharge end 212.Multiple sub- driven wheels 231 are used at discharge end, it is adjacent from cold between driven wheel But band has opposite effect, from increasing the tension of cooling zone, and then is conducive to improve discharge end cooling belt surface fertiliser granulates Falling-off effect.

Referring to Fig. 3, in a further embodiment, the tangent line A of the scraper part 311 and 212 intersection 213 of discharge end Angle α with scraper part 311 is 0-45 °.Scraper part 311 and the tangent line A of 212 intersection 213 of discharge end refer to driven wheel in phase The cooling zone of 213 tangent line A at friendship, discharge end 212 are rotated around driven wheel, and cooling zone is moved to direction of motion when intersection The exactly direction tangent line A of intersection 213.That is force direction and intersection of the scraper part 311 to coronal fertiliser granulates The angle of the direction of motion at place is α, can achieve the fertiliser granulates of effectively abjection cooling zone in this way.Preferred angle α is 0- 30°.It is furthermore preferred that scraper part 311 is to the force direction of coronal fertiliser granulates and the movement of intersection when angle α is 0 ° Direction is exactly the opposite, and active force is maximum, and scraping effect is more preferable.

Referring to Fig. 2, in a further embodiment, the lower section of the cooling zone 210 is equipped with multiple bumps 214, when the cooling zone 210 is sent at driven wheel 212, the bump 214 is used for the coronal fertilizer in cooling zone 210 Particle ejection is expected, with the coronal fertiliser granulates that fall off.Preferably, the material of the cooling zone 210 is PVC, PU, PE or rubber The belt of glue material matter, it is preferred that the hardness of bump 214 is greater than cooling zone 210, and harder bump is moved to driven wheel 212 When place, bump 214 jacks up cooling zone 210, and the fertiliser granulates on 210 surface of cooling zone is made to receive effect from below Power, to achieve the effect that smoothly to fall off from 210 surface of cooling zone.Preferably, bump 214 is in periodic arrangement under cooling zone Side.

In a further embodiment, the dropping device 300 further includes vibration device 320, and the vibration device 320 wraps Vibrating motor 321 and vibration section 322 are included, the lower section of the cooling zone 210 is arranged in the vibration section 322.It is understood that Vibrating motor 321 and vibration section 322 connect, and vibrating motor 321 drives vibration section 322 to vibrate after working, and are placed under discharge end 212 The vibration section 322 of side drives discharge end 212 to vibrate, to loosen the adhesion strength for reducing fertiliser granulates and cooling belt surface, by institute The coronal fertiliser granulates stated in cooling zone 210 smoothly remove.It is set it is understood that driven wheel 212 is closed in vibration section 322 It sets, so that fertiliser granulates vibrate again after cooling down enough, to guarantee the forming degree of fertiliser granulates.

In a further embodiment, the vibration section 322 is one of vibrator bar, vibrating reed and vibrating head or more Kind.

Referring to Fig. 4, in a further embodiment, 210 surface of cooling zone is additionally provided with lug boss 215 and recessed portion One of 216 or two kind combination.Lug boss 215 and recessed portion 216 are for formation after falling in drop on cooling belt surface The preferably coronal fertiliser granulates of sphericity.For example, steel strip surface is all arranged to the recessed of periodic arrangement when cooling zone is steel band When concave portion, when drop falls in the position with recessed portion, the bottom of coronal fertiliser granulates is formed in the shape of similar recessed portion, And then make the sphericity for increasing bottom.Or steel strip surface is when being all arranged to the lug boss of periodic arrangement, adjacent protrusion Pit is formed between portion, can form spherical preferable coronal fertiliser granulates since the presence of pit makes drop equally.Although energy The preferably coronal fertiliser granulates of sphericity are accessed, but since the pit between recessed portion and lug boss can be to coronal fertiliser granulates It falls off and generates resistance, keep its not easily to fall off.But due to stripper of the present invention there are problems that can solve this, reaching can obtain To the preferably coronal fertiliser granulates of sphericity, and the effect that discharges is not influenced.

In a further embodiment, the distance between the receiving end and the discharge end are 5-100 meters, the cooling The linear velocity of band is 0.2-2 meter per second.For example, when the distance between the receiving end and the discharge end are 100 meters, it is described When the linear velocity of cooling zone is 2 meter per second, cooling time of the fertilizer slurry drop in cooling zone is 50 seconds.

In a further embodiment, the pressure size for the drop that the drop forming device provides is 0.3-1.6MPa, Viscosity is 1000-20000 centipoise.It is understood that can be according to the different viscositys in different fertilizer ingredient, the pressure of drop can The adjustment of applicability.Drop in above parameter range is fallen in cooling zone, then cooling by cooling zone, can be obtained hard Spend the coronal fertiliser granulates in 100-200 ox.

In a further embodiment, side opposite with transmission fertilizer in the cooling zone 210 is filled equipped with circulating cooling Set (not shown).The cooling back installation is used for cooling zone 210.The rate of heat exchange of cooling zone 210 makes to drop into cold But the drop quick refrigeration on 210 surface of band forms the coronal fertiliser granulates that hardness is big, consistency is high.The cooling back installation It can be but be not limited to recirculated cooling water device, circulating cooling liquid nitrogen device, circulating cooling dry ice device.

Fig. 5 and Fig. 6 are please referred to, in a further embodiment, the drop forming device 100 includes 1100 He of discharge nozzle Discharging ring 1200.The discharge nozzle 1100 is hollow structure, and the discharge nozzle 1100 includes discharging tube body 1110, nozzle 1120.The discharging tube body 1110 includes feed inlet 1112, sealing end 1113 and tube wall 1111, the feed end 1112 and described Sealing end 1113 is oppositely arranged, and the setting of tube wall 1111 is between the feed inlet 1112 and the sealing end 1113, the nozzle 1120 are arranged on the tube wall 1111, and the nozzle 1120 connects with the feed inlet 1112.It is offered in nozzle 1120 First discharge hole 1121 of periodic arrangement, feed inlet 1112 connect with the first discharge hole 1121.The discharge nozzle 1100 For accommodating and transmitting slurry, slurry is transported in discharge nozzle 1100 hollow structure in delivery pump or under gravity, And it is sprayed from the first discharge hole 1121.One end of the discharging tube body makes the slurry from charging using 1113 setting of sealing end After mouth 1112 is passed through, transmitted in the pipeline of discharging tube body 1110, when the slurry is transferred to the sealing end 1113, due to The inhibition of sealing end 1113, the slurry with pressure and speed be extruded in sealing end with formed after biggish pressure and speed from First discharge hole 1121 squeezes out.1113 setting of sealing end can increase the pressure and speed of slurry, or same Pressure and rate request under can reduce the power of delivery pump.The discharge nozzle 1100 can be circle, ellipse etc..

It is understood that the center or off-centered position of the discharging ring 1200 is arranged in the discharge nozzle 1100 It sets.Preferably, the discharge nozzle 1100 is from the direction of nozzle 1120 is equipped with close to the discharging ring body 1210, that is to say, that The axial line (not shown) of the discharging ring 1200 is not overlapped with the axial line 1114 of the discharge nozzle 1100, and the discharge nozzle 1100 axial line 1114 compared to the discharging ring 1200 axial line close to the nozzle 1120.The discharging ring can be shortened 1200 at a distance from 1100 phase of discharge nozzle cutting, so that the discharging ring 1200 cuts the tool squeezed out from nozzle 1120 There is the slurry of larger speed.

It is understood that the tubular hollow structure refers to that intermediate is hollow tubular structure.Preferably, the discharging Ring body 1210 can be, but not limited to as cylindrical hollow structure, polygon prism cylindrical structure.It is understood that the discharging ring 1200 can refer to that the discharging ring 1200 itself can surround the axial line of discharging ring around the discharge nozzle 1100 rotation 1114 rotations, it may also be said to be 1200 rotation of discharging ring.It is noted that not having in discharging ring body 1210 in Fig. 4 The second discharge hole 1220 is seen, this is because the discharging ring body 1210 is rotated in the sectional view of certain position and do not presented Second discharge hole 1220 can carrying out sectional view parsing when the discharging ring body 1210 rotates to another angle Discharge hole 1200 is presented, the second discharge hole 1220 in the ring body 1210 that discharges can refer to shown in Fig. 6.

When system work, slurry is transported in discharge nozzle 1100, is gathered in discharging tube body 1110, and pass through Logical nozzle 1120 related to discharging tube body 1110 squeezes out.During the work time, the discharging ring body 1210 is ceaselessly enclosed It is rotated around the discharge nozzle 1100, the discharging ring sheet that the slurry squeezed out from the first discharge hole 1121 in nozzle 1120 is rotated again The second discharge hole 1220 cutting on body 1210, forms drop, wherein the direction that cuts off and slurry are from the direction that nozzle sprays It is perpendicular.The slurry squeezed out from nozzle 1120 is by the second discharge hole 1220 in discharging ring 1210, due to the second discharge hole 1220 are ceaselessly rotating with discharging ring body 1210, and slurry is when passing through the second discharge hole 1220 substantially by the second discharging Hole 1220 is cut off, therefore forms drop.The drop come out from the second discharge hole 1220 falls on cold on the surface of cooling zone 210 But, cooling zone 210 moves under the action of driving wheel and driven wheel, and drop is cooling in moving process, last coronal fertilizer Grain is fallen into collection device in the edge of driven wheel from the surface of cooling zone 210.It is understood that the slurry can be Fertilizer slurry is also possible to other slurries for needing to be transformed into drop.The fertilizer slurry refer to by nitrogenous fertilizer, phosphate fertilizer, potash fertilizer, in One of trace element fertilizer, organic carbon fertilizer, microorganism fertilizer etc. or it is a variety of be mixed to form fertilizer slurry, wherein mixed mode can To be level-one mixing, it is also possible to second level mixing, three-level mixing etc., it is to be understood that sequence, the temperature of fertilizer slurry mixing The conditions such as degree, pH value are unlimited, can require to be adjusted according to the characteristic and mixing of the material composition of fertilizer slurry.

Referring to Fig. 6, in a further embodiment, discharge nozzle 1100 further includes material-homogenating device 1130, the material-homogenating device 1130 are arranged between the nozzle 1120 and the discharging ring 1200, and the material-homogenating device 1130 offers and the feed inlet The aperture of the 1112 refining outlets 1131 to connect, the refining outlet 1131 is less than the aperture of first discharge hole 1121. It is understood that the aperture of refining outlet 1131 is 0.5-10 millimeters.Material-homogenating device is existed by buckle or welding manner setting On discharge nozzle, preferred embodiment is to be tightly connected with discharging tube wall, to avoid fertilizer slurry is flowed out from gap and causes drop It sprays irregular.

In further embodiment, the direction that the nozzle 1120 is open is within the scope of vertically positive and negative 45 degree.It can With understanding, the slurry can spray after nozzle 1120 along direction vertically downward, can also be with vertical direction Direction within the scope of 45 degree to the left or within the scope of 45 degree to the right with vertical direction sprays.The nozzle 1120 and the discharging The distance of ring body 1210 is 0.5-20 millimeters.It is understood that the nozzle 1120 and the discharging ring body 210 are nearest The distance between side wall be 0.5-20 millimeters.So as to pass through discharging ring body at a relatively high speed from the slurry that nozzle 1120 comes out Discharge hole 220 on 210.

In a further embodiment, the distance between the discharge nozzle 1100 and the discharging ring 1200 are 0.5-20 milli Rice.The drop sprayed from discharge nozzle 1100 can be had the cutting of the case where high speed apart from bottom discharge ring 1200 at this, make from The drop that second discharge hole 1220 comes out also keeps higher speed.The discharging ring 1200 is at a distance from the cooling zone 210 It is 3-500 millimeters, the drop with fair speed falls in cooling zone 210 under above-mentioned distance and can form hardness and reach 100 Ns Or more coronal fertiliser granulates, it is preferred that hardness can be formed in the coronal fertiliser granulates of 100-200 newton.It is understood that It is that the viscosity of the fertilizer slurry in discharge nozzle 1100 is 1000-20000 centipoise, the pressure of fertilizer slurry is 0.3-1.6MPa.

The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously Limitations on the scope of the patent of the present invention therefore cannot be interpreted as.It should be pointed out that for those of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to guarantor of the invention Protect range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.

Claims (10)

1. a kind of intelligence floats grain de- material system, which is characterized in that the intelligence float grain de- material system include drop forming device, it is cold But equipment and stripper；The drop forming device is for providing drop；The cooling equipment include cooling zone, driving wheel and Driven wheel, the cooling zone are rotated around the driving wheel and the driven wheel, and the cooling zone is for drop to be cooled into Coronal fertiliser granulates, the cooling zone include feed end and discharge end, and the feed end is for receiving the drop, the discharging The position that end refers to the part cooling zone being transmitted at the driven wheel and discharges for the coronal fertiliser granulates；The de- material dress The nearly discharge end setting is rested against, for splitting away off the coronal fertiliser granulates from the cooling zone.

2. the floating grain de- material system of intelligence as described in claim 1, which is characterized in that the stripper includes the scraper plate that falls off, The discharge end of the cooling zone is arranged in the scraper plate that falls off, and the scraper plate that falls off includes scraper part, the scraper part and institute Stating the distance between discharge end is 0-1 millimeters.

3. the floating grain de- material system of intelligence as described in claim 1, which is characterized in that the driven wheel includes that multiple sons are driven Wheel, multiple sub- driven wheels are in periodic arrangement below discharge end.

4. the floating grain de- material system of intelligence as claimed in claim 2, which is characterized in that the scraper part intersects with the discharge end The angle of the tangent line at place and the scraper part is 0-45 °.

5. the floating grain de- material system of intelligence as described in claim 1, which is characterized in that the lower section of the cooling zone is equipped with multiple prominent Object is played, when the cooling zone is sent at driven wheel, the bump is used to eject the coronal fertiliser granulates in cooling zone, With the coronal fertiliser granulates that fall off.

6. the floating grain de- material system of intelligence as described in claim 1, which is characterized in that the dropping device further includes vibration dress It sets, the vibration device includes vibrating motor and vibration section, and the lower section of the cooling zone is arranged in the vibration section.

7. the floating grain de- material system of intelligence as claimed in claim 6, which is characterized in that the vibration section is vibrator bar, vibrating reed With one of vibrating head or a variety of.

8. the floating grain de- material system of intelligence as claimed in claim 2, which is characterized in that the cooling belt surface is additionally provided with lug boss With one of recessed portion or two kinds of combinations.

9. the floating grain de- material system of intelligence as described in claim 1, which is characterized in that between the receiving end and the discharge end Distance be 5-100 meter, the linear velocity of the cooling zone is 0.2-2 meter per second.

10. the floating grain de- material system of intelligence as described in claim 1, which is characterized in that the liquid that the drop forming device provides The pressure size of drop is 0.3-1.6MPa, and viscosity is 1000-20000 centipoise.