CN115259187B - High specific surface area macroporous pseudo-boehmite powder and preparation method thereof - Google Patents
High specific surface area macroporous pseudo-boehmite powder and preparation method thereof Download PDFInfo
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- CN115259187B CN115259187B CN202210880164.2A CN202210880164A CN115259187B CN 115259187 B CN115259187 B CN 115259187B CN 202210880164 A CN202210880164 A CN 202210880164A CN 115259187 B CN115259187 B CN 115259187B
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- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 title claims abstract description 30
- 239000000843 powder Substances 0.000 title claims abstract description 21
- 238000002360 preparation method Methods 0.000 title claims abstract description 13
- 238000005406 washing Methods 0.000 claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 61
- 230000007246 mechanism Effects 0.000 claims description 30
- 238000002347 injection Methods 0.000 claims description 24
- 239000007924 injection Substances 0.000 claims description 24
- 238000003756 stirring Methods 0.000 claims description 19
- 238000005273 aeration Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 14
- 239000000243 solution Substances 0.000 claims description 14
- 238000007789 sealing Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 12
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 11
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 11
- 241001330002 Bambuseae Species 0.000 claims description 11
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 11
- 239000011425 bamboo Substances 0.000 claims description 11
- 239000007787 solid Substances 0.000 claims description 11
- 230000032683 aging Effects 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 150000004645 aluminates Chemical class 0.000 claims description 6
- 238000001035 drying Methods 0.000 claims description 6
- 239000004744 fabric Substances 0.000 claims description 6
- 239000011148 porous material Substances 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 5
- 239000003513 alkali Substances 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 239000012065 filter cake Substances 0.000 description 17
- 230000008569 process Effects 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 101000927062 Haematobia irritans exigua Aquaporin Proteins 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000012466 permeate Substances 0.000 description 4
- 239000002585 base Substances 0.000 description 3
- 238000010030 laminating Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 208000005156 Dehydration Diseases 0.000 description 1
- 238000006424 Flood reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000002537 cosmetic Substances 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000009699 differential effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F7/00—Compounds of aluminium
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Inorganic Chemistry (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a high specific surface area macroporous pseudo-boehmite powder and a preparation method thereof, which relate to the field of pseudo-boehmite preparation and solve the problem of long time consumption in the existing powder preparation washing process.
Description
Technical Field
The invention relates to the field of pseudo-boehmite preparation, in particular to macroporous pseudo-boehmite powder with high specific surface area and a preparation method thereof.
Background
Pseudo-boehmite widely used as a coating additive, a high-grade ceramic, a petrochemical high-efficiency catalyst, a submicron/nanometer grinding material, a polishing material, a cosmetic filler, an inorganic film material and the like, and is a novel material with wide development prospect; in the preparation process of pseudo-boehmite, the aged pseudo-boehmite solution needs to be subjected to filter pressing treatment, solid matters obtained by filter pressing need to be repeatedly subjected to filter pressing washing treatment through a stirring and washing device, and alkaline matters in the solid matters are sufficiently washed out to ensure the purity of the pseudo-boehmite.
In the conventional stirring and washing process of the stirring and washing device with the extrusion function, because solid matters after filter pressing treatment and solid matters obtained by secondary dehydration and extrusion after stirring and washing are compact, when a filter cake is stirred and washed, the compacted solid matters cannot be rapidly dispersed in the first time, the water needs to be enabled to have great fluidity under the action of a stirring structure, the matters slowly disperse in the water, the single stirring and washing time is prolonged, repeated extrusion stirring and washing are needed to ensure the purity of the pseudo-boehmite, and the preparation period of the pseudo-boehmite is greatly prolonged.
Disclosure of Invention
The invention aims to provide high specific surface area macroporous pseudo-boehmite powder capable of rapidly stirring and washing a filter cake and a preparation method thereof, so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions:
a macroporous pseudo-boehmite powder with high specific surface area, wherein the grain size of the pseudo-boehmite powder is smaller than 80um, and the pore volume is 0.35-1.25cm 3 Per gram, specific surface area of 130-365m 2 And/g, the pore diameter is 2.5-18nm.
The preparation method of the macroporous pseudo-boehmite powder with high specific surface area comprises the following steps:
s1, preparing slurry, and preparing an equal volume of meta-aluminate and aluminate solution by deionized water, wherein the molar ratio of the meta-aluminate to the aluminate solution is 5-6:0.6-1.2, pouring the two solutions into a rotating liquid film device for rapid mixing to obtain slurry;
s2, aging treatment, namely aging the slurry in the step S1 for 1-4.5 hours at 70-95 ℃;
s3, filter pressing and washing, wherein solid-liquid separation is realized by treating the slurry subjected to aging treatment through a filter press, and solid is placed in a stirring and washing device, and alkali attached to the solid is removed by water washing at 82-95 ℃;
s4, filtering, namely filtering the washed solution to obtain filter residues and filtrate;
s5, drying, and drying and stirring filter residues at 200-380 ℃ to obtain the macroporous pseudo-boehmite powder with high specific surface area.
Preferably, in S3 the stirring and washing device includes the movable section of thick bamboo, the upper end of movable section of thick bamboo is installed through annular hasp and is permeated water the lid, just the outside fixed sleeve who permeates water the lid has a hook type shirt rim, the inboard intercommunication of hook type shirt rim has a plurality of groups fluid-discharge tube, the top fixed mounting of permeating water the lid has the fixed network, just the inner wall of fixed network covers the filter cloth, the inboard of movable section of thick bamboo has well siphunculus through mount fixed mounting, just the inboard screw thread of well siphunculus installs the screw rod, well siphunculus with slidable mounting has the piston disc between the movable section of thick bamboo, two sets of gag lever post that are the symmetry and arrange are installed to the bottom of piston disc, just the gag lever post with the lower extreme outside movable sleeve of screw rod has the fixing base, the bottom fixed mounting of fixing base has the motor, the gag lever post with install drive mechanism between the screw rod, just rotary mechanism is installed to the lower extreme of piston disc, two sets of annotate the basin channels, the last port of water channel installs the check valve, just the water channel' S of water channel installs the bottom of water channel thread of screw rod installs the screw rod, the screw rod has the screw rod, the piston channel has the piston channel, the piston disc, the piston rod has the screw rod, the piston rod, the limit rod, the piston rod has the water channel to the water tank.
Preferably, the rotary mechanism comprises an internal gear fixedly mounted at the lower end of the piston disc, gears four are fixedly mounted at the upper ends of the two groups of limiting rods, the gears four are movably meshed with the internal gear, a sliding column is movably embedded at the inner side of the top of the limiting rods, a first spring is mounted at the bottom of the sliding column, a connecting rod is mounted at the inner side of the limiting rods, the upper ends of the connecting rods are fixedly embedded at the inner side of the sliding column, a buckling piece is mounted between the connecting rods and the limiting rods, a transmission piece is mounted at the bottom of the limiting rods, and when the gears four are driven to rotate by the two groups of limiting rods, the piston disc is driven to rotate in the movable cylinder through the internal gear meshed with the outer side of the limiting rods, and the rotation direction of the piston disc is consistent with that of the limiting rods.
Preferably, the fastening piece comprises a limiting hole formed in the inner side of the connecting rod, the inner side of the limiting rod is provided with a rotating arm through a connecting shaft in a rotating mode, the bottom of the rotating arm is provided with a limiting column through a U-shaped groove in a movable mode, the limiting column is transversely and slidably mounted on the inner side of the limiting rod, the outer diameter of the limiting column is consistent with the inner diameter of the limiting hole, a spring II is fixedly mounted between the top of the rotating arm and the limiting rod, and when the connecting rod moves downwards, the limiting column can be embedded into the limiting hole under the action of the spring II to limit the connecting rod.
Preferably, the transmission piece comprises a plurality of tooth grooves which are arranged at the bottom of the limiting rod in a circumferential array manner, movable teeth are arranged in the inner side sliding mode of the tooth grooves, a connecting arm is hinged between the bottom of the connecting rod and the movable teeth, and when the connecting rod moves downwards, the plurality of movable teeth can be pushed out of the tooth grooves through the connecting arm, so that the movable teeth are meshed with the third gear.
Preferably, the transmission mechanism comprises a first gear fixedly sleeved on the outer surface of the screw, two groups of second gears are meshed and mounted on the outer side of the first gear, the second gears are movably mounted on the upper end of the fixing seat through a rotating rod, third gears are fixedly mounted on the upper ends of the rotating rods and are movably meshed with the movable teeth, the diameter of the first gears is larger than that of the second gears, a clamping piece is mounted between the output end of the motor and the screw, the first gears can enable the second gears to rotate rapidly in the rotating process of the screw, and meanwhile the third gears drive the limiting rods to rotate through the movable teeth.
Preferably, the clamping piece comprises two groups of dome clamping pins which are circumferentially distributed and movably mounted at the inner side of the output end of the motor, limiting springs are mounted at the opposite ends of the dome clamping pins, a plurality of groups of connecting arms are arranged at the inner side of the screw rod, the dome clamping pins are close to one end of the fixing seat and movably embedded with the connecting arms, when the screw rod cannot rotate, the dome clamping pins can retract to the inner side of the output shaft of the motor due to continuous output of the motor, the output shaft of the motor rotates, and protection is formed on the motor.
Preferably, the aeration mechanism is installed to the lower extreme of piston disc, the aeration mechanism including the activity inlay in the snap ring of piston disc bottom, just the lower extreme fixed mounting of snap ring has the reverse gear, reverse gear with two sets of four equal movable engagement of gear, the upper end movable mounting of snap ring has a plurality of to be the elasticity ratchet that circumference array was arranged, the inboard of piston disc has a plurality of ratchet one of group through rotary rod movable mounting, just ratchet one with elasticity ratchet movable engagement, the upper end fixed mounting of rotary rod has eccentric wheel one, two adjacent groups install airtight tube between the ratchet one, just airtight tube through the mounting bracket with the piston disc is fixed connection, airtight tube's inboard movable inlay has the airtight stopper, just airtight stopper's side fixed mounting has the third spring, airtight stopper is kept away from the one end fixed mounting of third spring just the push rod with the first movable laminating of eccentric wheel, airtight tube keeps away from the one end intercommunication of airtight stopper has two sets of air pipes, and two sets of one-way air pipe outside all has cup jointed one air pipe one and has one side air pipe to be distributed in the unilateral air pipe one direction of air valve, one side air valve is connected with the air valve one is connected with the one side air valve in the one direction of air valve, one side is connected with the air valve, and the one side air valve is connected with the one side air valve, and air valve, the one side air valve has one side air valve and air valve, one side air valve and one side air valve has one air valve and air valve.
Preferably, the water injection stop gear including the laminating install in the rubber tyer in the gag lever post outside, just the inboard fixed mounting of rubber tyer have the pivot, the pivot through support one movable mounting in the bottom of mount, the both ends of pivot are all fixed the movable ratchet that has cup jointed, ratchet two is installed in the outside meshing of movable ratchet, and two sets of ratchet two opposite side equal fixed mounting have gear five, gear five through support two movable mounting in the bottom of mount, gear five's outside meshing install gear six, and two sets of fixed mounting have the connecting axle between the gear six, just the connecting axle through support three movable mounting in the bottom of mount, the well tip position of connecting axle is fixed cup joint eccentric wheel two, the bottom of water injection channel is fixed to be inlayed the cross connecting pipe, just the inboard slip of cross connecting pipe is close to the one end fixed mounting of eccentric wheel two has the connection frame, just the inboard terminal surface of connection frame with the second movable laminating of eccentric wheel, the bottom fixed mounting of support two sets of plates have the ratchet, and ratchet one side sliding sleeve is close to the movable mounting has the ratchet, and two movable sleeve is rotated in the ratchet one end when the movable sleeve is rotated the movable sleeve and is installed in the ratchet is moved to the movable sleeve and is rotated the movable sleeve and is made the movable sleeve of the ratchet one side is fixed to the movable sleeve.
Compared with the prior art, the invention has the beneficial effects that:
according to the invention, the movable cylinder is moved downwards to extrude the filter cake through the screw rod, the pressure applied to the movable column by the piston disc during extrusion can trigger the clamping piece and the buckling piece at the same time, so that the limiting rod can drive the piston disc to rotate rapidly, the filter cake is extruded and drained in a rotating way, when the screw rod is moved upwards, water can be injected into the upper part space of the piston disc through the water injection limiting mechanism, meanwhile, when the screw rod is moved downwards, the aeration mechanism can be triggered through the limiting rod, a large number of dense bubbles can appear at the upper end of the piston disc, and the bubbles can quickly wash the filter cake in a flushing way, and the filter cake can be moved back and forth in the mode to achieve a rapid washing effect.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the through pipe and the screw in the invention;
FIG. 3 is an enlarged view of the invention at A in FIG. 2;
FIG. 4 is an enlarged view of the invention at B in FIG. 2;
FIG. 5 is a schematic view of the structure of the gears IV and internal tooth gears of the present invention;
FIG. 6 is an enlarged view of FIG. 5 at C in accordance with the present invention;
FIG. 7 is an enlarged view of the invention at D in FIG. 5;
FIG. 8 is an enlarged view of FIG. 5 at E in accordance with the present invention;
FIG. 9 is a schematic diagram of a reversing gear according to the present invention;
FIG. 10 is a schematic view of the structure of an aeration disc according to the present invention;
FIG. 11 is a schematic view of a snap ring structure according to the present invention;
FIG. 12 is a schematic illustration of the structure of the eccentric wheel I and the push rod of the present invention;
FIG. 13 is a schematic view of a four-way connection tube and a rubber wheel according to the present invention.
In the figure: 1-a movable cylinder; 2-a water permeable cover; 3-fixing net; 4-filtering cloth; 5-hook-type skirt; 6-a liquid discharge pipe; 7-fixing frames; 8-a middle through pipe; 9-a water injection channel; 10-a one-way liquid valve; 11-a piston disc; 12-a limit rod; 13-a screw; 14-fixing base; 15-an electric motor; 16-a rotation mechanism; 17-a transmission mechanism; 18-a water injection limiting mechanism; 19-a transmission member; 20-fastening piece; 21-a clamping piece; 22-an aeration mechanism; 23-limiting springs; 24-gear one; 25-gear II; 26-gear three; 27-tooth grooves; 28-gear IV; 29-internal tooth gear; 30-sliding columns; 31-spring one; 32-connecting rods; 33-limiting holes; 34-a swivel arm; 35-a limit column; 36-spring II; 37-movable teeth; 38-a connecting arm; 39-dome bayonet; 40-reversing gear; 41-snap ring; 42-elastic ratchet; 43-ratchet one; 44-eccentric wheel one; 45-airtight cylinder; 46, an aeration disc; 47-trachea; 48-an airtight plug; 49-spring III; 50-pushing rod; 51-four-way connecting pipes; 52-sealing plug; 53-rubber wheels; 54-rotating shaft; 55-a movable ratchet; 56-a second ratchet wheel; 57-gear five; 58-gear six; 59-a connection frame; 60-eccentric wheel II; 61-a sliding rod; 62-spring four.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
High specific surface area macroporous pseudo-boehmite powder with grain size smaller than 80um and pore volume of 0.35-1.25cm 3 Per gram, specific surface area of 130-365m 2 And/g, the pore diameter is 2.5-18nm.
The preparation method of the macroporous pseudo-boehmite powder with high specific surface area comprises the following steps:
s1, preparing slurry, and preparing an equal volume of meta-aluminate and aluminate solution by deionized water, wherein the molar ratio of the meta-aluminate to the aluminate solution is 5-6:0.6-1.2, pouring the two solutions into a rotating liquid film device for rapid mixing to obtain slurry;
s2, aging treatment, namely aging the slurry in the step S1 for 1-4.5 hours at 70-95 ℃;
s3, filter pressing and washing, wherein the aged slurry is subjected to filter press treatment to realize solid-liquid separation, and the solid is placed in a stirring and washing device to remove the attached alkali in the solid by water at 82-95 ℃;
s4, filtering, namely filtering the washed solution to obtain filter residues and filtrate;
s5, drying, and drying and stirring filter residues at 200-380 ℃ to obtain the macroporous pseudo-boehmite powder with high specific surface area.
Referring to fig. 1-3, in S3 in the drawing, the stirring and washing device includes a movable tube 1, a permeable cover 2 is installed at the upper end of the movable tube 1 through an annular lock catch, a hook-shaped skirt 5 is fixedly sleeved at the outer side of the permeable cover 2, a plurality of groups of drain pipes 6 are connected at the inner side of the hook-shaped skirt 5, a fixed net 3 is fixedly installed at the top of the permeable cover 2, and a filter cloth 4 is covered on the inner wall of the fixed net 3, a middle through tube 8 is fixedly installed at the inner side of the movable tube 1 through the fixed frame 7, a screw 13 is installed at the inner side thread of the middle through tube 8, a piston disc 11 is slidably installed between the middle through tube 8 and the movable tube 1, two groups of limit rods 12 which are symmetrically arranged are installed at the bottom of the piston disc 11, a fixed seat 14 is movably sleeved at the outer side of the lower end of the limit rods 12 and the screw 13, a motor 15 is fixedly installed at the bottom of the fixed seat 14, a transmission mechanism 17 is installed between the limit rods 12 and the screw 13, a rotating mechanism 16 is installed at the lower end of the piston disc 11, two groups of drain channels 9 are opened at the inner side of the middle through tube 8, a one-way valve 10 is installed at the upper port of the water injection channel 9, a one-way liquid valve 10 is installed at the lower port of the water injection channel 9, and the water injection channel 9 can permeate and permeate from the lower end of the water channel 1 through the water inlet tube 1 is discharged through the water channel 1, and can permeate water channel 1, the water can flow through the water channel is discharged through the water channel 6, and can flow through the water channel 1, and can flow through the water channel is discharged through the filter pipe 1, and has the water channel through the filter pipe through has through the one-permeable pipe through 2.
Referring to fig. 5 and 9, the rotating mechanism 16 in the drawing includes an internal gear 29 fixedly mounted at the lower end of the piston disc 11, a gear four 28 is fixedly mounted at the upper ends of the two sets of limiting rods 12, the gear four 28 is movably engaged with the internal gear 29, a sliding column 30 is movably embedded at the inner side of the top of the limiting rods 12, a first spring 31 is mounted at the bottom of the sliding column 30, a connecting rod 32 is slidably mounted at the inner side of the limiting rods 12, the upper end of the connecting rod 32 is fixedly embedded at the inner side of the sliding column 30, a fastening piece 20 is mounted between the connecting rod 32 and the limiting rods 12, a transmission piece 19 is mounted at the bottom of the limiting rods 12, and when the two sets of limiting rods 12 drive the gear four 28 to rotate, the piston disc 11 is driven by the internal gear 29 meshed at the outer side to rotate in the movable cylinder 1, and the rotating direction is consistent with the rotating direction of the limiting rods 12.
Referring to fig. 6, the fastening member 20 in the drawing includes a limiting hole 33 formed in the inner side of the connecting rod 32, a rotating arm 34 is rotatably mounted on the inner side of the limiting rod 12 through a connecting shaft, a limiting post 35 is movably mounted on the bottom of the rotating arm 34 through a U-shaped groove, the limiting post 35 is transversely slidably mounted on the inner side of the limiting rod 12, the outer diameter of the limiting post 35 is consistent with the inner diameter of the limiting hole 33, a second spring 36 is fixedly mounted between the top of the rotating arm 34 and the limiting rod 12, and when the connecting rod 32 moves downward, the limiting post 35 can be embedded into the inside of the limiting hole 33 under the action of the second spring 36 to limit the connecting rod 32.
Referring to fig. 7, the driving member 19 in the drawing includes a plurality of tooth grooves 27 arranged in a circumferential array at the bottom of the stop lever 12, movable teeth 37 are slidably mounted on the inner sides of the tooth grooves 27, and a connecting arm 38 is hinged between the bottom of the connecting rod 32 and the movable teeth 37, wherein when the connecting rod 32 moves downward, the plurality of movable teeth 37 can be pushed out from the inner sides of the tooth grooves 27 by the connecting arm 38, so that the movable teeth 37 are meshed with the third gear 26.
Referring to fig. 4, the transmission mechanism 17 in the drawing includes a first gear 24 fixedly sleeved on the outer surface of the screw 13, two sets of second gears 25 are meshed and mounted on the outer side of the first gear 24, the second gears 25 are movably mounted on the upper end of the fixed seat 14 through a rotating rod, a third gear 26 is fixedly mounted on the upper end of the rotating rod, the third gear 26 is movably meshed with a movable tooth 37, the diameter of the first gear 24 is larger than that of the second gear 25, a clamping piece 21 is mounted between the output end of the motor 15 and the screw 13, and in the process of driving the screw 13 to rotate by the motor 15, the first gear 24 can enable the second gears 25 to rotate rapidly, and meanwhile, the third gear 26 drives the limiting rod 12 to rotate through the movable tooth 37.
Referring to fig. 8, the clamping member 21 in the drawing includes two groups of dome clamping pins 39 movably mounted at the inner side of the output end of the motor 15 in a circumferential arrangement, limiting springs 23 are mounted at opposite ends of the two groups of dome clamping pins 39, a plurality of groups of connecting arms 38 are opened at the inner side of the screw 13, one end of the dome clamping pin 39 close to the fixing seat 14 is movably embedded with the connecting arms 38, when the screw 13 cannot rotate, the dome clamping pins 39 retract to the inner side of the output shaft of the motor 15 due to continuous output of the motor 15, so that the output shaft of the motor 15 rotates to protect the motor 15.
Referring to fig. 9-12, an aeration mechanism 22 is installed at the lower end of a piston disc 11 in the illustration, the aeration mechanism 22 comprises a clamping ring 41 movably embedded at the bottom of the piston disc 11, a reversing gear 40 is fixedly arranged at the lower end of the clamping ring 41, the reversing gear 40 is movably meshed with two groups of gears four 28, a plurality of elastic ratchets 42 which are circumferentially arrayed are movably installed at the upper end of the clamping ring 41, a plurality of groups of first ratchet wheels 43 are movably installed at the inner side of the piston disc 11 through rotating rods, the first ratchet wheels 43 are movably meshed with the elastic ratchets 42, an eccentric wheel 44 is fixedly installed at the upper end of the rotating rod, an airtight cylinder 45 is installed between two adjacent groups of first ratchet wheels 43, the airtight cylinder 45 is fixedly connected with the piston disc 11 through a mounting frame, an airtight plug 48 is movably embedded at the inner side end of the airtight cylinder 45, a spring three 49 is fixedly arranged at the side end of the airtight plug 48, a push rod 50 is fixedly attached to one end of the eccentric wheel 44, one end of the airtight cylinder 45, which is far from the airtight plug 48, is communicated with two groups of air pipes 47, unidirectional air pipes 47 are sleeved on the outer sides of the two groups of the air pipes, one end 47 is distributed below the air pipes 47, the one end is movably meshed with the elastic ratchet wheels 42, the air valve 47 is fixedly connected with the air valve 46 through the air valve 46, and is fixedly connected with the air valve 46 at the air valve 46 through the air valve 46, and is rotatably connected with the air valve 46, and the air valve 47 is fixedly arranged at the air valve 46, and the air valve 45 is rotatably and the air valve 46, and is fixedly connected with the air valve 46.
The working principle of the quick and repeated washing of the pseudo-boehmite filter cake can be as follows: when the pseudo-boehmite filter cake is washed, a user opens the water permeable cover 2 through the annular lock catch, the filter cake is placed at the upper end of the piston disc 11, then the water permeable cover 2 is installed, the user starts the motor 15, the motor 15 rotates positively and negatively under the condition that the filter cake is not placed, and the speed of the movable cylinder 1 moving up and down on the outer side of the piston disc 11 through the screw 13 is consistent in time;
when the motor 15 drives the screw rod 13 to enable the movable cylinder 1 to move downwards, namely the piston disc 11 extrudes a filter cake, the downward moving distance of the movable cylinder 1 is shortened under the limit of the filter cake, but the time for driving the screw rod 13 by the motor 15 is unchanged, at the moment, the screw rod 13 continuously rotates, the piston disc 11 extrudes the filter cake, the piston disc 11 exerts pressure on the sliding column 30, the sliding column 30 is retracted into the limiting rod 12, at the moment, when the connecting rod 32 moves downwards, the limiting column 35 is embedded with the limiting hole 33, the connecting rod 32 is limited, at the moment, the connecting rod 32 moves downwards to eject the movable tooth 37, at the moment, the movable tooth 37 is meshed with the gear III 26, namely the screw rod 13 rotates at a high speed, because the movable cylinder 1 can not move downwards any more, the screw rod 13 is limited, the motor 15 continuously outputs, the dome bayonet 39 is retracted into the inside of an output shaft of the motor 15, the output shaft of the motor 15 is enabled to rotate, the motor 15 is protected, and the time reaching the downward moving time of the movable cylinder 1 is reached;
after the downward moving time of the movable cylinder 1 reaches the standard, the motor 15 can drive the screw rod 13 to rotate reversely, at the moment, the movable cylinder 1 moves upwards, the rotation of the screw rod 13 can drive the two groups of limiting rods 12 to rotate at high speed in the upward moving process of the movable cylinder 1, the limiting rods 12 can drive the piston disc 11 to rotate in the same direction through the movable engagement of the gears IV 28 and the internal tooth gears 29, the reversing gear 40 arranged between the two groups of gears IV 28 rotates reversely, the reversing gear 40 can drive the plurality of elastic ratchets 42 to rotate in an engaged manner with the ratchet wheels IV 43 through the clamping ring 41, namely, at the moment, the rotation of the reversing gear 40 can enable the plurality of ratchet wheels IV 43 to rotate quickly, and the ratchet IV 43 can repeatedly push the push rod 50 in the rotating process of the eccentric wheel IV, so that the sealing plug 52 continuously and quickly fills gas into the aeration disc 46;
meanwhile, when the movable cylinder 1 moves upwards, the water injection limiting mechanism 18 can be triggered, water can be injected into the upper space of the piston disc 11 through the water injection limiting mechanism 18 and the water injection channel 9 at the moment, so that water floods the extruded filter cake, when high-pressure dense bubbles are filled into the water through the aeration disc 46, the water is violently turned over, and the high-pressure bubbles can impact the filter cake, so that the filter cake is rapidly dispersed in the water, and washing is realized;
when realizing that movable section of thick bamboo 1 upwards moves under the effect of screw rod 13, its piston disc 11 can discharge wash water, filter-pressing treatment is once more carried out to the filter residue, when piston disc 11 moves down, can be automatic to the upper portion space water injection of piston disc 11, submerge once more to the filter residue, simultaneously through high-pressure intensive bubble aeration effect up to standard, make the filter residue disperse fast in water and wash, this kind of washing mode is more swift than current mode, and can guarantee the purity of pseudo-boehmite powder when later stage is dry.
Example 2
Referring to fig. 2, 5 and 13, for further explanation of embodiment 1, the water injection limiting mechanism 18 includes a rubber wheel 53 mounted on the outer side of the limiting rod 12 in a fitting manner, a rotating shaft 54 is fixedly mounted on the inner side of the rubber wheel 53, the rotating shaft 54 is movably mounted on the bottom of the fixing frame 7 through a first bracket, movable ratchet wheels 55 are fixedly sleeved at two ends of the rotating shaft 54, a second ratchet wheel 56 is mounted on the outer side of the movable ratchet wheels 55 in a meshed manner, a fifth gear 57 is fixedly mounted on one opposite side of the two groups of ratchet wheels 56, a sixth gear 58 is mounted on the bottom of the fixing frame 7 through a second bracket in a movable manner, a connecting shaft is fixedly mounted between the sixth gear 58 and is movably mounted on the bottom of the fixing frame 7 through a third bracket, an eccentric wheel 60 is fixedly sleeved at the middle end portion of the connecting shaft, a four-way connecting pipe 51 is fixedly embedded at the bottom of the water injection channel 9, a sealing plug 52 is slidably embedded at the inner side of the four-way connecting pipe 51, a connecting frame 59 is fixedly mounted at one end of the sealing plug 52 close to the second eccentric wheel 60, an inner end face of the connecting frame 59 is movably attached to the eccentric wheel 60, a sixth gear 58 is mounted at the bottom of the fixing frame 7 in a movable manner, a sixth gear 58 is mounted on the outer side of the connecting frame is meshed with the connecting plate, a sixth gear 58 is fixedly mounted at the bottom of the connecting plate is fixedly mounted at the bottom of the connecting shaft is fixedly connected to the connecting shaft 61, and is slidably mounted at one end of the connecting plate 61 is fixedly connected to the fourth sliding frame 61, and is mounted at 61 through the sliding rod 61 and is mounted at the bottom 61.
Automatic water feeding working principle: before washing, a user connects the front end and the rear end of the four-way connecting pipe 51 with the high-pressure water pipe, the sealing plug 52 is closed to the four-way connecting pipe 51 in an initial state, when the movable cylinder 1 and the fixed frame 7 move upwards, the rotation of the rubber wheel 53 can drive the movable ratchet wheel 55 to drive the ratchet wheel II 56 to rotate, the rotation of the ratchet wheel 56 can drive the gear III 58 to rotate rapidly through the meshing of the gear V57 and the gear VI 58, at the moment, the gear VI 58 repeatedly and rapidly pushes the connecting frame 59 through the eccentric wheel II 60, the sealing plug 52 is not closed to the four-way connecting pipe 51, at the moment, high-pressure water can flow into the water injection channel 9 through the four-way connecting pipe 51, finally flows to the upper end part space of the piston disc 11 through the one-way liquid valve 10, and when the movable cylinder 1 and the fixed frame 7 move downwards, the rotation of the rubber wheel 53 can not drive the ratchet wheel II 56 to rotate, and water injection treatment can not be carried out;
it should be noted that the diameter of the gear five 57 is far greater than that of the gear six 58, a differential effect can be formed, only the eccentric wheel two 60 can effectively pull the sealing plug 52 through the connecting frame 59 in the high-speed rotation process, and when the sealing plug 52 is not completely reset under the action of the spring four 62, the eccentric wheel two 60 pushes the sealing plug 52 again, so that high-pressure water can be stably and continuously input.
Example 3
Referring to fig. 1 and 2, further description of other embodiments of the stirring and washing device is provided, the stirring and washing device includes a movable barrel 1, a water permeable cover 2 is installed at the upper end of the movable barrel 1 through an annular lock catch, a hook-shaped skirt 5 is fixedly sleeved at the outer side of the water permeable cover 2, a plurality of groups of drain pipes 6 are communicated at the inner side of the hook-shaped skirt 5, a fixed net 3 is fixedly installed at the top of the water permeable cover 2, filter cloth 4 is covered on the inner wall of the fixed net 3, a middle through pipe 8 is fixedly installed at the inner side of the movable barrel 1 through the fixed frame 7, a screw 13 is installed at the inner side thread of the middle through pipe 8, a piston disc 11 is slidably installed between the middle through pipe 8 and the movable barrel 1, two groups of limit rods 12 which are symmetrically arranged are installed at the bottom of the piston disc 11, a fixed seat 14 is movably sleeved at the outer side of the lower end of the limit rod 12 and the screw 13, a motor 15 is fixedly installed at the bottom of the fixed seat 14, a transmission mechanism 17 is installed between the limit rod 12 and the screw 13, a rotating mechanism 16 is installed at the lower end of the piston disc 11, two groups of water injection channels 9 are opened at the inner sides of the fixed net 3, a check valve 10 is installed at the lower end of the water injection channel 9, a check valve 10 is installed at the lower end of the check valve 10, and the check valve 10 is installed at the check valve 10, and the check valve is installed at the check valve 1.
In this embodiment: the user can dismantle and assemble the water permeable cover 2 through the existing annular lock catch, in the use process, the lower end of the liquid beating pipe 6 is connected with the honeycomb duct, the movable cylinder 1 moves downwards, when the piston disc 11 extrudes a filter cake, filtered water seeps out of the filter cloth 4, and the seeped liquid can be recycled through the cooperation of the hook-shaped skirt edge 5 and the liquid discharge pipe 6.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. A preparation method of high specific surface area macroporous pseudo-boehmite powder is characterized by comprising the following steps: the method comprises the following steps:
s1, preparing slurry, and preparing an equal volume of meta-aluminate and aluminate solution by deionized water, wherein the molar ratio of the meta-aluminate to the aluminate solution is 5-6:0.6-1.2, pouring the two solutions into a rotating liquid film device for rapid mixing to obtain slurry;
s2, aging treatment, namely aging the slurry in the step S1 for 1-4.5 hours at 70-95 ℃;
s3, filter pressing and washing, wherein solid-liquid separation is realized by treating the slurry subjected to aging treatment through a filter press, and solid is placed in a stirring and washing device, and alkali attached to the solid is removed by water washing at 82-95 ℃;
s4, filtering, namely filtering the washed solution to obtain filter residues and filtrate;
s5, drying, namely, placing filter residues at 200-380 ℃ for drying and stirring to obtain high-specific-surface-area macroporous pseudo-boehmite powder, wherein the grain size of the pseudo-boehmite powder is smaller than 80 mu m, the pore volume is 0.35-1.25 cm/g, the specific surface area is 130-365 m/g, and the pore diameter is 2.5-18nm;
s3 in the stirring and washing device comprises a movable barrel (1), a water permeable cover (2) is arranged at the upper end of the movable barrel (1) through an annular lock catch, a hook-shaped skirt edge (5) is fixedly sleeved at the outer side of the water permeable cover (2), a plurality of groups of liquid discharge pipes (6) are communicated at the inner side of the hook-shaped skirt edge (5), a fixed net (3) is fixedly arranged at the top of the water permeable cover (2), a filter cloth (4) is covered on the inner wall of the fixed net (3), a middle through pipe (8) is fixedly arranged at the inner side of the movable barrel (1) through a fixing frame (7), a screw rod (13) is arranged at the inner side of the middle through pipe (8), a piston disc (11) is slidably arranged between the middle through pipe (8) and the movable barrel (1), two groups of limit rods (12) which are symmetrically distributed are arranged at the bottom of the piston disc (11), a fixed seat (14) is movably sleeved at the outer side of the lower end of the screw rod (13), a motor (15) is fixedly arranged at the bottom of the fixed seat (14), a screw rod (12) and a rotary mechanism (16) is arranged at the inner side of the two groups of the piston disc (16), a one-way liquid valve (10) is arranged at the upper port of the water injection channel (9), a water injection limiting mechanism (18) is arranged at the lower port of the water injection channel (9), and the flowing direction of the one-way liquid valve (10) is that the water injection channel (9) flows to the movable cylinder (1) in a one-way manner;
the rotary mechanism (16) comprises an internal gear (29) fixedly arranged at the lower end of the piston disc (11), gears four (28) are fixedly arranged at the upper ends of two groups of limiting rods (12), the gears four (28) are movably meshed with the internal gear (29), a sliding column (30) is movably embedded at the inner side of the top of the limiting rods (12), a first spring (31) is arranged at the bottom of the sliding column (30), a connecting rod (32) is slidably arranged at the inner side of the limiting rods (12), the upper ends of the connecting rods (32) are fixedly embedded at the inner side of the sliding column (30), a buckling piece (20) is arranged between the connecting rods (32) and the limiting rods (12), and a transmission piece (19) is arranged at the bottom of the limiting rods (12);
the lower extreme of piston dish (11) is installed aeration mechanism (22), aeration mechanism (22) including the activity inlay in snap ring (41) of piston dish (11) bottom, just the lower extreme fixed mounting of snap ring (41) has reverse gear (40), reverse gear (40) with two sets of four (28) of gears all movable engagement, the upper end movable mounting of snap ring (41) has a plurality of elastic ratchet (42) that are circumference array arrangement, the inboard of piston dish (11) is through rotary rod movable mounting a plurality of groups ratchet one (43), just ratchet one (43) with elastic ratchet (42) movable engagement, the upper end fixed mounting of rotary rod has eccentric wheel one (44), two sets of adjacent ratchet one (43) between install airtight section of thick bamboo (45), just airtight section of thick bamboo (45) are fixed connection through the mounting bracket with piston dish (11), airtight section of thick bamboo (45) inboard movable inlay has airtight stopper (48), and airtight (48) side fixed mounting has spring three (49), one end that keeps away from of airtight section of thick bamboo (48) is kept away from in one end (50) the fixed airtight section of thick bamboo (48) and is kept away from airtight section of thick bamboo (48), the two groups of air pipes (47) are sleeved with one-way air valves, ports of one group of air pipes (47) distributed below penetrate through the piston disc (11), ports of the other group of air pipes (47) distributed above are connected with an aeration disc (46), the aeration disc (46) is fixedly embedded in the upper end face of the piston disc (11), the air pipes (47) distributed below are in one-way air transmission to the inside of the airtight cylinder (45) through the one-way air valves, and the air pipes (47) distributed above are in one-way air transmission to the inside of the aeration disc (46) through the one-way air valves;
the water injection limiting mechanism (18) comprises a rubber wheel (53) which is mounted on the outer side of the limiting rod (12) in a fitting mode, a rotating shaft (54) is fixedly mounted on the inner side of the rubber wheel (53), the rotating shaft (54) is movably mounted on the bottom of the fixing frame (7) through a first bracket, movable ratchets (55) are fixedly sleeved at two ends of the rotating shaft (54), a second ratchet wheel (56) is mounted on the outer side of the movable ratchets (55) in a meshed mode, a fifth gear (57) is fixedly mounted on one opposite side of the two groups of ratchets (56), the fifth gear (57) is movably mounted on the bottom of the fixing frame (7) through a second bracket, a sixth gear (58) is mounted on the outer side of the fifth gear (57) in a meshed mode, a connecting shaft is fixedly mounted between the sixth gear (58) and is movably mounted on the bottom of the fixing frame (7) through a third bracket, a second eccentric wheel (60) is fixedly sleeved at the middle end portion of the connecting shaft, a connecting shaft is fixedly embedded in a connecting pipe (51) at the bottom of the water injection channel (9), a connecting pipe (51) is fixedly embedded on the inner side of the connecting pipe, a sealing plug (59) is fixedly connected with a sealing plug (60) and is fixedly connected with one end face (59) of the sealing plug (59), the bottom fixed mounting of mount (7) has the extension board, just the extension board is close to one end fixed mounting of connection frame (59) has four sets of slide bar (61), just slide bar (61) slip run through in connection frame (59), spring four (62) are installed in the outside of slide bar (61).
2. The method for preparing the high specific surface area macroporous pseudo-boehmite powder according to claim 1, which is characterized in that: the buckling piece (20) comprises a limiting hole (33) formed in the inner side of the connecting rod (32), a rotating arm (34) is rotatably mounted on the inner side of the limiting rod (12) through a connecting shaft, a limiting column (35) is movably mounted on the bottom of the rotating arm (34) through a U-shaped groove, the limiting column (35) is transversely and slidably mounted on the inner side of the limiting rod (12), the outer diameter of the limiting column (35) is identical to the inner diameter of the limiting hole (33), and a spring II (36) is fixedly mounted between the top of the rotating arm (34) and the limiting rod (12).
3. The method for preparing the high specific surface area macroporous pseudo-boehmite powder according to claim 1, which is characterized in that: the transmission part (19) comprises a plurality of tooth grooves (27) which are distributed and arranged at the bottom of the limiting rod (12) in a circumferential array manner, movable teeth (37) are arranged on the inner sides of the tooth grooves (27) in a sliding manner, and connecting arms (38) are hinged between the bottom of the connecting rod (32) and the movable teeth (37).
4. The method for preparing the high specific surface area macroporous pseudo-boehmite powder according to claim 3, which is characterized in that: the transmission mechanism (17) comprises a first gear (24) fixedly sleeved on the outer surface of the screw (13), two groups of second gears (25) are meshed and mounted on the outer side of the first gear (24), the second gears (25) are movably mounted at the upper end of the fixed seat (14) through rotating rods, three gears (26) are fixedly mounted at the upper ends of the rotating rods, the three gears (26) are movably meshed with the movable teeth (37), the diameter of the first gear (24) is larger than that of the second gears (25), and a clamping piece (21) is mounted between the output end of the motor (15) and the screw (13).
5. The method for preparing the high specific surface area macroporous pseudo-boehmite powder according to claim 4, which is characterized in that: the clamping piece (21) comprises two groups of dome clamping pins (39) which are circumferentially distributed and movably mounted at the inner side of the output end of the motor (15), limiting springs (23) are mounted at the opposite ends of the dome clamping pins (39), a plurality of groups of connecting arms (38) are arranged at the inner side of the screw (13), and one end, close to the fixed seat (14), of the dome clamping pins (39) is movably embedded with the connecting arms (38).
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Address after: 043300 Opposite to Gas Branch, North Section, No.9 Road, Hejin Aluminum Plant, Yuncheng City, Shanxi Province Patentee after: Shanxi Juhua Aluminum Co.,Ltd. Country or region after: China Address before: 043300 north section of No.9 Aluminum Factory Road, Hejin City, Yuncheng City, Shanxi Province Patentee before: HEJIN CITY JU ALUMINUM CO.,LTD. Country or region before: China |