CN112844256A - Aluminum powder batch feeding method and automatic feeding equipment in aluminum sol production process - Google Patents
Aluminum powder batch feeding method and automatic feeding equipment in aluminum sol production process Download PDFInfo
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- CN112844256A CN112844256A CN202011587876.2A CN202011587876A CN112844256A CN 112844256 A CN112844256 A CN 112844256A CN 202011587876 A CN202011587876 A CN 202011587876A CN 112844256 A CN112844256 A CN 112844256A
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 title claims abstract description 167
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 238000000034 method Methods 0.000 title claims abstract description 27
- 229910052782 aluminium Inorganic materials 0.000 title claims abstract description 26
- 238000002156 mixing Methods 0.000 claims abstract description 140
- 238000006243 chemical reaction Methods 0.000 claims abstract description 111
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 85
- 238000003860 storage Methods 0.000 claims abstract description 79
- 238000003756 stirring Methods 0.000 claims abstract description 44
- 239000007789 gas Substances 0.000 claims abstract description 42
- 238000011010 flushing procedure Methods 0.000 claims abstract description 22
- 239000007921 spray Substances 0.000 claims abstract description 22
- 238000005303 weighing Methods 0.000 claims abstract description 20
- 239000000463 material Substances 0.000 claims description 29
- 239000011268 mixed slurry Substances 0.000 claims description 23
- 230000008569 process Effects 0.000 claims description 12
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 6
- 238000005406 washing Methods 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims 1
- 235000017491 Bambusa tulda Nutrition 0.000 claims 1
- 241001330002 Bambuseae Species 0.000 claims 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims 1
- 239000011425 bamboo Substances 0.000 claims 1
- 239000002912 waste gas Substances 0.000 abstract description 5
- 230000004580 weight loss Effects 0.000 abstract description 3
- 239000006185 dispersion Substances 0.000 abstract description 2
- 238000005507 spraying Methods 0.000 description 7
- 230000008859 change Effects 0.000 description 6
- 239000000126 substance Substances 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 4
- 238000004891 communication Methods 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 239000002253 acid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000000843 powder Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 2
- 239000012295 chemical reaction liquid Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- -1 papermaking Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- VXAUWWUXCIMFIM-UHFFFAOYSA-M aluminum;oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Al+3] VXAUWWUXCIMFIM-UHFFFAOYSA-M 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000012784 inorganic fiber Substances 0.000 description 1
- 229910017053 inorganic salt Inorganic materials 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000020477 pH reduction Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J13/00—Colloid chemistry, e.g. the production of colloidal materials or their solutions, not otherwise provided for; Making microcapsules or microballoons
- B01J13/0004—Preparation of sols
- B01J13/0043—Preparation of sols containing elemental metal
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Dispersion Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Accessories For Mixers (AREA)
Abstract
The invention belongs to the field of aluminum sol production, and aims to solve the problems in the prior art, the invention discloses automatic feeding equipment in the aluminum sol production process, which comprises a water storage cylinder, an aluminum powder feeding assembly, a weighing assembly, a gas storage tank, a mixing assembly, a reaction kettle and a flushing assembly, wherein a third motor drives a screw rod to carry out accurate feeding, and the accurate weighing of the weight loss of aluminum powder can be realized through a pressure sensing block; the first stirring paddle is used for fully mixing the aluminum powder and water and keeping the aluminum powder not to settle in the water; the waste gas generated in the reaction tank is protected, so that the danger is avoided; the universal joint rotates to drive the spray head to rotate to spray and wash the interior of the mixing tank, so that all aluminum powder is washed into the reaction tank; the invention also discloses a batch feeding method of aluminum powder in the production process of the aluminum sol, which solves the problem of dispersion when the aluminum powder is directly added into the reaction vessel under the high-temperature and high-humidity conditions, and ensures that the aluminum powder under high pressure smoothly enters the reaction vessel.
Description
Technical Field
The invention belongs to the field of alumina sol production equipment, and particularly relates to an aluminum powder batch feeding method and automatic feeding equipment in an alumina sol production process.
Background
The aluminum sol is an inorganic high polymer which has electropositive colloidal particles, a Tyndall effect, a wide viscosity range and a pH value of 3.5-4.5 and is widely applied to the industries of textile, papermaking, ceramics, refractory materials, inorganic fibers and the like. The preparation method of the aluminum sol has a plurality of methods, including organic aluminum salt hydrolysis method, inorganic salt hydrolysis catalysis method, pseudo-boehmite acidification method, metal aluminate reaction method and the like, and the aluminum sol obtained by different preparation methods is suitable for different industrial production requirements.
In the field of preparing the aluminum sol by reacting aluminum powder with acid, the existing production method mainly prepares the spinnable aluminum sol and is applied to the field of preparing alumina fibers, and the process method has the advantages of low production cost and high solid content.
However, due to the reasons of water vapor generated in the reaction equipment, released polluting gases, high temperature, high pressure and the like in the production process, the addition of aluminum powder is greatly limited in the production operation process; at present, aluminum powder is added in a manual mode in the production process, so that a large metering error is easily generated, repeated quantitative addition is difficult, and the production efficiency is influenced; meanwhile, the method has great dangerousness in the reaction process, such as dust pollution, volatilization of polluting gases and the like; residual bonding exists in the mixing tank when the aluminum powder mixed slurry is injected into the reaction kettle, so that the production efficiency and the quality are influenced; the original process route is that aluminum powder is added into a reaction aluminum salt solution at one time, the temperature in the reaction process can reach 80-120 ℃, the reaction liquid level in a reaction kettle is raised, meanwhile, the generation of combustible gases such as water vapor, oxynitride or hydrogen is accompanied, and the pressure in the reaction kettle can reach 10-100 KPa. The method is limited by the reasons, the one-time feeding amount is limited, the manual operation is difficult to realize secondary or even multiple feeding, the production quality of the aluminum sol is excessively influenced, and the production capacity of the aluminum sol is limited.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a batch aluminum powder feeding method and automatic feeding equipment in the production process of aluminum sol.
In order to solve the technical problems, the aluminum powder mixing device comprises a water storage cylinder, an aluminum powder feeding assembly, a weighing assembly, a gas storage tank, a mixing assembly, a reaction kettle and a flushing assembly, wherein the mixing assembly is connected with the reaction kettle through a mixing pipe, the water storage cylinder is connected with the mixing assembly through a water inlet pipe, the gas storage tank is connected with the mixing assembly through a gas adding pipe, the aluminum powder storage cylinder is arranged above the aluminum powder feeding assembly, the aluminum powder feeding assembly is connected with the mixing assembly through a feeding pipe, the aluminum powder storage cylinder is fixedly connected with the weighing assembly, and the flushing assembly is arranged inside the mixing assembly and is connected with the water storage cylinder through a flushing pipe.
According to some embodiments of the present invention, the mixing assembly includes a first motor, a mixing connector, a mixing tank, and a first stirring paddle, wherein a cylinder of the mixing tank is ellipsoidal, so that the mixed aluminum powder can enter the reaction kettle by gravity and the resistance during stirring is reduced, the rotation speed of the aluminum powder mixed slurry is increased, the first stirring paddle is disposed inside the mixing tank, the first stirring paddle is connected to the first motor, the first motor rotates to drive the first stirring paddle to rotate, the first stirring paddle is used for fully mixing the aluminum powder and water, and preventing the aluminum powder from solidifying and adhering to equipment when contacting with water vapor in a powder state, and keeping the aluminum powder from settling in water, the outer wall of the first motor is fixedly connected to the mixing tank through the mixing connector, and the mixing connector is used for fixedly supporting the first motor, The noise is reduced, the mixed aluminum powder is prevented from splashing, and the change of the mixed state of the aluminum powder caused by the entry of the water vapor of the external substance is prevented.
According to some embodiments of the invention, one end of the mixing pipe is communicated with the bottom of the mixing tank, and the other end of the mixing pipe is communicated with the reaction kettle, and the mixing pipe is provided with a first ball valve which controls the communication and blocking states between the mixing tank and the reaction kettle.
According to some embodiments of the invention, the reaction kettle comprises a second motor, a reaction connecting piece, a reaction tank and a second stirring paddle, the reaction tank main body is ellipsoidal, so that the flow resistance of the reaction materials in the reaction tank is smaller and the reaction is more complete when stirring, the second stirring paddle is arranged in the reaction tank and is connected with the second motor, the second motor rotates to drive the second stirring paddle, the second stirring paddle is used for fully mixing the aluminum powder mixed slurry with acid without sedimentation, the outer wall of the second motor is fixedly connected with the reaction tank through the reaction connecting piece, and the reaction connecting piece is used for fixedly supporting the second motor, reducing noise, preventing reaction substances from splashing, preventing pollution gas generated by reaction from being scattered, and preventing foreign matters or impurities from entering to cause the change of a reaction state.
According to some embodiments of the invention, the water storage cylinder main body is of a cylinder structure with an opening at the upper part, so that the water level in the water storage cylinder can be observed in real time conveniently, and water can be added more conveniently as required.
According to some embodiments of the present invention, a second ball valve is connected to the water inlet pipe, one end of the water inlet pipe is connected to the bottom end of the water storage cylinder, the other end of the water inlet pipe is connected to the mixing tank, and the second ball valve controls the connection and disconnection between the water storage cylinder and the mixing tank.
According to some embodiments of the invention, the gas storage tank is hollow, one end of the gas feeding pipe is communicated with the inside of the gas storage tank, the other end of the gas feeding pipe is communicated with the mixing component, inert protective gas is introduced into the mixing tank, the internal pressure of the mixing tank is increased, so that a pressure difference is generated between the mixing tank and the reaction tank, and the aluminum powder mixed slurry is pressed into the reaction container, thereby overcoming the problem of difficulty in feeding the aluminum powder into the reaction tank due to high pressure generated by reaction in the adding process, protecting waste gas generated in the reaction tank, and avoiding danger.
According to some embodiments of the invention, the air-adding pipe is a tubular structure, and a third ball valve is communicated with the air-adding pipe and controls the communication and blocking state between the air storage tank and the material mixing tank.
According to some embodiments of the invention, the aluminum powder storage cylinder main body is of a cylindrical structure with a hollow interior, the aluminum powder storage cylinder comprises an upper top plate, a side plate and a conical hopper, the upper top plate main body is of a circular plate structure, the side plate main body is of an annular shape, the diameter of the outer peripheral wall of the side plate is smaller than the circular diameter of the upper top plate, the upper top plate is more convenient to disassemble and feed while the sealing performance is ensured, the conical hopper cylinder is of an inverted cone-shaped cylinder structure, a through hole is formed at the tip of the cone of the conical hopper and is used for matching with the aluminum powder feeding assembly, and aluminum powder enters the aluminum powder feeding assembly through the through hole.
According to some embodiments of the invention, the weighing assembly comprises a plurality of fixing rods, a fixing plate and pressure sensing blocks, the fixing rods can ensure that the fixing plate is stressed more uniformly while the fixing plate is supported stably, so that the weight measurement is more accurate, one end of each fixing rod is fixedly connected with the fixing plate, the other end of each fixing rod is fixedly connected with the side plate, the main body of the fixing plate is of a rectangular structure, the pressure sensing blocks are arranged at four corners of a rectangle on the lower bottom surface of the fixing plate, and the pressure sensing blocks play a supporting and weighing role.
According to some embodiments of the invention, the aluminum powder feeding assembly comprises a sleeve, a screw rod, a third motor and a support frame, one end of the sleeve is communicated with the feeding pipe, aluminum powder enters the feeding pipe through the sleeve, the screw rod is arranged inside the sleeve, one end of the screw rod is connected with the third motor, the third motor rotates to drive the screw rod to rotate, the aluminum powder is conveyed into the feeding pipe, one end of the sleeve, which is far away from the feeding pipe, is fixedly connected with the outer wall of the third motor, so as to ensure the sealing performance and reduce the noise, the length of the screw rod is the same as that of the sleeve, and the support frame is fixedly connected with the outer wall of the third motor, so as to fixedly support the third motor and ensure the stability in the feeding process.
According to some embodiments of the invention, the feeding pipe is provided with a fourth ball valve, and the fourth ball valve controls the communication and blocking state between the sleeve and the mixing tank.
According to some embodiments of the invention, the sleeve is provided with a feeding hole, the feeding hole is fitted with the conical tip of the conical hopper, and the sleeve and the conical hopper are designed in a separated mode, so that the influence on the weighing precision of the pressure sensing block due to the fixation of the sleeve is prevented.
According to some embodiments of the invention, the washing assembly comprises a spray head and a universal joint, the spray head is arranged inside the mixing tank, one end of the universal joint is fixedly connected with the washing pipe, the other end of the universal joint is fixedly connected with the spray head, the spray head is driven to rotate through the rotation of the universal joint for spraying and cleaning, the inside of the mixing tank is sprayed and cleaned under high pressure without dead angles, and aluminum powder is guaranteed to be completely washed into the reaction tank.
According to some embodiments of the invention, one end of the flushing pipe is communicated with the bottom of the water storage tank, and the other end of the flushing pipe is communicated with the spray head, and a fifth ball valve is arranged on the flushing pipe and controls the communication and blocking state between the water storage tank and the spray head.
An aluminum powder batch feeding method in the production process of aluminum sol comprises the following steps,
S1，
the water storage cylinder injects water into the material mixing tank, the aluminum powder in the aluminum powder storage cylinder is weighed by the weighing component and then added into the material mixing tank, the aluminum powder added in a single time is mixed for 5-10min after being added into the material mixing tank, the proportion range of the aluminum powder and the water in the material mixing tank is 1: 1-3, the rotating speed of the first stirring paddle is 5-50r/min, the PH value of the water is 6.5-7.5,
S2，
the gas storage tank injects inert gas into the mixing tank to increase the gas pressure in the mixing tank, so that the gas pressure in the mixing tank is 10-20KPa higher than the pressure in the reaction tank, so that the aluminum powder mixed slurry is injected into the reaction tank, the injection process of the aluminum powder mixed slurry lasts for 2-5min,
S3，
the flushing component sprays rotationally to spray the inner wall of the material mixing tank for 10-20s, the aluminum powder mixed slurry remained on the inner wall of the material mixing tank is flushed into the reaction tank,
S4，
repeating the steps S1-S3, and carrying out multiple batches of feeding until 3-10 times of feeding.
The invention has the beneficial effects that:
(1) the aluminum powder storage cylinder comprises the conical hopper with a conical structure design, so that aluminum powder can automatically fall to a spiral feeding part at the lower part under the action of gravity, and continuous addition of the aluminum powder is realized;
(2) the feeding part adopts a screw feeding mode, the third motor drives the screw rod to accurately feed according to the feeding amount of the aluminum powder, and the weight loss of the aluminum powder can be accurately weighed through the pressure sensing block;
(3) the mixing tank adopts an ellipsoid-shaped tank body, so that the mixed aluminum powder can conveniently enter the reaction kettle through self gravity, the resistance is lower during stirring, the rotation speed of the aluminum powder mixed slurry is higher, the first stirring paddle can realize stepless speed regulation, the first stirring paddle is used for fully mixing the aluminum powder and water, and simultaneously, the aluminum powder is prevented from being solidified and adhered to equipment when being contacted with water vapor in a powder state, and the aluminum powder is kept from settling in water;
(4) the gas storage tank is arranged and is controlled by the third ball valve, inert protective gas is introduced into the mixing tank, the internal pressure of the mixing tank is increased, pressure difference is generated between the mixing tank and the reaction tank, and the aluminum powder mixed slurry is pressed into the reaction container, so that the problem of difficulty in feeding materials into the reaction tank due to high pressure generated by reaction in the adding process is solved, waste gas generated in the reaction tank is protected, and danger is avoided;
(5) by adopting the spray head and the universal joint, after the aluminum powder mixed slurry is filled, the fifth ball valve is used for controlling the on-off and the water pressure of water flow, the spray head is driven to rotate by the rotation of the universal joint for spraying and cleaning, the inside of the mixing tank is sprayed and cleaned under high pressure without dead angles, and the aluminum powder is ensured to be completely flushed into the reaction tank;
(6) the mixing connecting piece and the reaction connecting piece are adopted for fixing and supporting the motor, reducing noise, preventing reaction substances from splashing, preventing pollution gas generated by reaction from diffusing out, and preventing foreign matters or impurities from entering to cause internal change.
(7) The batch mechanical automatic addition of the aluminum sol is realized, the single-batch capacity of the aluminum sol is improved, the labor is saved, and the production cost of the aluminum sol is reduced;
(8) the personnel participation in the production process of the aluminum sol is reduced, and the production quality of the aluminum sol is improved.
(9) The aluminum powder and water are mixed before the aluminum powder is added, so that the problem of dispersion when the aluminum powder is directly added into a reaction container under high-temperature and high-humidity conditions is solved.
Drawings
The invention is further illustrated with reference to the following figures and examples.
FIG. 1 is a schematic structural diagram of an overall structure of a preferred embodiment of the present invention;
FIG. 2 is a schematic structural view of another perspective of the overall structure of the present invention;
FIG. 3 is a schematic structural diagram of an aluminum powder storage cylinder, a weighing assembly and an aluminum powder loading assembly according to the present invention;
FIG. 4 is a schematic structural view of an internal screw rod of the aluminum powder feeding assembly of the present invention;
FIG. 5 is a schematic view of the construction of the compounding assembly of the present invention;
FIG. 6 is a schematic structural view of a reaction vessel according to the present invention;
FIG. 7 is a schematic view of the structure of part A of the present invention;
FIG. 8 is a schematic view of the structure of the portion B of the present invention;
FIG. 9 is a schematic view of the structure of the portion C according to the present invention;
FIG. 10 is a schematic view of the structure of part D of the present invention;
FIG. 11 is a process flow diagram of the present invention.
In the figure:
1. a mixing assembly; 102. a first motor; 103. a mixing connecting piece; 104. a mixing tank; 105. a first stirring paddle;
2. a reaction kettle; 201. a second motor; 202. a reaction connector; 203. a reaction tank; 204. a second stirring paddle;
3. a water storage cylinder;
4. a gas storage tank;
5. an aluminum powder storage cylinder; 501. an upper top plate; 502. a side plate; 503. a conical hopper;
6. a weighing assembly; 601. fixing the rod; 602. a fixing plate; 603. a pressure sensing block;
7. aluminum powder feeding assembly; 701. a sleeve; 702. a screw rod; 703. a third motor; 704. a support frame; 705. a feeding hole;
8. a flushing assembly; 801. a spray head; 802. a universal joint;
91. a mixing pipe; 911. a first ball valve; 92. a water inlet pipe; 921. a second ball valve; 93. an air adding pipe; 931. a third ball valve; 94. feeding pipes; 941. a fourth ball valve; 95. a flush tube; 951. and a fifth ball valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In order to solve the technical problem, please refer to fig. 1, the invention includes a mixing component 1, a reaction kettle 2, a water storage cylinder 3, a gas storage tank 4, an aluminum powder storage cylinder 5, a weighing component 6, an aluminum powder feeding component 7 and a flushing component 8, wherein the mixing component 1 is connected with the reaction kettle 2 through a mixing pipe 91, the water storage cylinder 3 is connected with the mixing component 1 through a water inlet pipe 92, the gas storage tank 4 is connected with the mixing component 1 through a gas adding pipe 93, the aluminum powder storage cylinder 5 is arranged above the aluminum powder feeding component 7, the aluminum powder feeding component 7 is connected with the mixing component 1 through a feeding pipe 94, the aluminum powder storage cylinder 5 is fixedly connected with the weighing component 6, and the flushing component 8 is arranged inside the mixing component 1 and is connected with the water storage cylinder 3 through a flushing pipe.
Referring to fig. 5, in at least one embodiment, the mixing assembly 1 includes a first motor 102, a mixing connector 103, a mixing tank 104 and a first stirring paddle 105, wherein the mixing tank 104 has an ellipsoidal cylinder to facilitate the aluminum powder to enter the reaction kettle 2 by gravity and to reduce the resistance during stirring, the aluminum powder slurry has a higher rotation speed, the first stirring paddle 105 is disposed inside the mixing tank 104, the first stirring paddle 105 is connected to the first motor 102, the first motor 102 rotates to drive the first stirring paddle 105 to rotate, the first stirring paddle 105 is used to fully mix the aluminum powder and water, and prevent the aluminum powder from being solidified and adhered to the equipment when contacting with water vapor in a powder state, and keep the aluminum powder from settling in the water, the outer wall of the first motor 102 is fixedly connected to the mixing tank 104 by the mixing connector 103, and the mixing connector 103 is used to fixedly support the first motor 102, The noise is reduced, the mixed aluminum powder is prevented from splashing, and the change of the mixed state of the aluminum powder caused by the entry of the water vapor of the external substance is prevented.
Referring to fig. 1, in at least one embodiment, one end of the mixing pipe 91 is connected to the bottom of the mixing tank 104, and the other end is connected to the reaction vessel 2, the mixing pipe 91 is provided with a first ball valve 911, and the first ball valve 911 controls the connection and disconnection between the mixing tank 104 and the reaction vessel 2.
Referring to fig. 6, in at least one embodiment, the reaction kettle 2 includes a second motor 201, a reaction connecting member 202, a reaction tank 203 and a second stirring paddle 204, a main body of the reaction tank 203 is ellipsoidal, so that a reaction substance flows in the reaction tank 203 with a smaller resistance and reacts more sufficiently during stirring, the second stirring paddle 204 is disposed inside the reaction tank 203, the second stirring paddle 204 is connected to the second motor 201, the second motor 201 rotates to drive the second stirring paddle 204, the second stirring paddle 204 is used for fully mixing the aluminum powder mixed slurry with the acid without settling, an outer wall of the second motor 201 is fixedly connected to the reaction tank 203 through the reaction connecting member 202, and the reaction connecting member 202 is used for fixedly supporting the second motor 201, reducing noise, preventing the reaction substance from splashing, preventing a pollutant gas generated by the reaction from being emitted, and preventing foreign matter from entering or causing a change in a reaction state.
Referring to fig. 1, further, the main body of the water storage cylinder 3 is a cylinder structure with an opening at the upper part, so that the water level in the water storage cylinder 3 can be observed in real time and water can be added more conveniently as required.
Referring to fig. 8, in at least one embodiment, the water inlet pipe 92 is communicated with a second ball valve 921, one end of the water inlet pipe 92 is communicated with the bottom end of the water storage cylinder 3, the other end of the water inlet pipe 92 is communicated with the material mixing tank 104, and the second ball valve 921 controls the on-off state and the water flow rate between the water storage cylinder 3 and the material mixing tank 104.
Further, the mixing ratio of the aluminum powder and the water in the mixing tank 104 is 1 (1-3), the water inlet pipe 92 is also provided with a flow meter, and the ratio of the aluminum powder and the water is controlled within the above range by judging the display value of the flow meter.
Referring to fig. 1, in at least one embodiment, the inside of the gas storage tank 4 is a hollow structure, one end of the gas adding pipe 93 is communicated with the inside of the gas storage tank 4, the other end of the gas adding pipe 93 is communicated with the material mixing component 1, inert shielding gas is introduced into the material mixing tank 104 to increase the internal pressure of the material mixing tank 104, so that a pressure difference is generated between the material mixing tank 104 and the reaction tank 203, and the aluminum powder mixed slurry is pressed into the reaction vessel, thereby overcoming the problem that the feeding into the reaction tank 203 is difficult due to high pressure generated by reaction in the adding process, protecting waste gas generated in the reaction tank 203, and avoiding danger.
Referring to fig. 7, in at least one embodiment, the air feeding pipe 93 is a tubular structure, a third ball valve 931 is connected to the air feeding pipe 93, and the third ball valve 931 controls the connection and disconnection state and the air flow magnitude between the air storage tank 4 and the material mixing tank 104.
Further, the temperature in the reaction tank 203 is 90-110 ℃, the pressure gauge is communicated with the interior of the reaction tank 203, and the pressure gauge is communicated with the interior of the mixing tank 104.
Further, the pressure in the reaction tank 203 is 10 to 100KPa during charging.
Furthermore, the pressure difference between the mixing tank 104 and the reaction tank 203 can be adjusted by adjusting the third ball valve 931 according to the indicated value of the pressure gauge, so that the internal air pressure of the mixing tank 104 is greater than the internal air pressure of the reaction tank 203, and the controllability and the smoothness of feeding are realized. Referring to fig. 3, in at least one embodiment, the aluminum powder storage barrel 5 has a cylindrical structure with a hollow interior, the aluminum powder storage barrel 5 includes an upper top plate 501, a side plate 502 and a conical hopper 503, the upper top plate 501 has a circular plate structure, the side plate 502 has an annular shape, the diameter of the outer peripheral wall of the side plate 502 is smaller than the circular diameter of the upper top plate 501, so that the upper top plate 501 can be detached and fed more conveniently while ensuring sealing performance, the conical hopper 503 has an inverted conical cylinder structure, a through hole is formed at the conical tip of the conical hopper 503 for matching with the aluminum powder feeding assembly 7, and aluminum powder enters the aluminum powder feeding assembly 7 through the through hole.
Referring to fig. 3, in at least one embodiment, the weighing assembly 6 includes a plurality of fixing rods 601, a fixing plate 602 and pressure sensing blocks 603, the fixing rods 601 are provided to ensure stable support and make the fixing plate 602 stressed more uniformly so as to make the weight measurement more accurate, one end of the fixing rod 601 is fixedly connected to the fixing plate 602 and the other end of the fixing rod 601 is fixedly connected to the side plate 502, the main body of the fixing plate 602 is rectangular, the pressure sensing blocks 603 are disposed at four rectangular corners of the bottom surface of the fixing plate 602, and the pressure sensing blocks 603 play a role in supporting and weighing.
Referring to fig. 3, in at least one embodiment, the aluminum powder feeding assembly 7 includes a sleeve 701, a spiral rod 702, a third motor 703 and a support frame 704, one end of the sleeve 701 is communicated with the feeding pipe 94, the aluminum powder enters the feeding pipe 94 through the sleeve 701, the spiral rod 702 is disposed inside the sleeve 701, one end of the spiral rod 702 is connected to the third motor 703, the third motor 703 rotates to drive the spiral rod 702 to rotate, the aluminum powder is conveyed into the feeding pipe 94, one end of the sleeve 701 away from the feeding pipe 94 is fixedly connected to an outer wall of the third motor 703, so as to ensure the sealing performance and reduce the noise, the length of the spiral rod 702 is the same as that of the sleeve 701, and the support frame 704 is fixedly connected to an outer wall of the third motor 703 to fixedly support the third motor 703, so as to ensure the stability during the feeding.
Referring to fig. 3, in at least one embodiment, a fourth ball valve 941 is disposed on the feeding pipe 94, and the fourth ball valve 941 controls the connection and disconnection between the sleeve 701 and the mixing tank 104.
Referring to fig. 9, in at least one embodiment, a feeding hole 705 is formed on the sleeve 701, the feeding hole 705 fits to the tapered tip of the tapered funnel 503, and the sleeve 701 and the tapered funnel 503 adopt a separate design to prevent the influence on the weighing accuracy of the pressure sensing block 603 due to the fixation of the sleeve 701.
Further, the single-time weight loss amount of the pressure-sensitive block 603 is 2-30Kg, and after the single-time measurement of the pressure-sensitive block 603 is finished, the third motor 703 stops rotating to stop feeding the material mixing tank 104.
Referring to fig. 10, in at least one embodiment, the flushing assembly 8 includes a nozzle 801 and a universal joint 802, the nozzle 801 is disposed inside the material mixing tank 104, one end of the universal joint 802 is fixedly connected to the flushing pipe 95, and the other end of the universal joint 802 is fixedly connected to the nozzle 801, the nozzle 801 is driven to rotate by the rotation of the universal joint 802 for spraying and cleaning, so as to perform high-pressure spraying and cleaning without a dead angle inside the material mixing tank 104, and ensure that all aluminum powder is flushed into the reaction tank 203.
Referring to fig. 8, in at least one embodiment, one end of the flushing pipe 95 is connected to the bottom of the water storage tank 3 and the other end is connected to the spray head 801, the flushing pipe 95 is provided with a fifth ball valve 951, and the fifth ball valve 951 controls the connection and disconnection state between the water storage tank 3 and the spray head 801.
Referring to fig. 11, when the reaction kettle is fed in batches, in the first step, water is injected into the mixing tank from the water storage cylinder, aluminum powder in the aluminum powder storage cylinder is weighed by the weighing assembly and then added into the mixing tank, because the aluminum powder used in the production process has the grain diameter of 50nm-1000 mu m, has strong activity and agglomeration, in order to ensure that the activity and the performance of the aluminum powder are not affected in the mixing process of the aluminum powder and the water, the mixing time of the aluminum powder added at one time is controlled within 5-10min after the aluminum powder is added into a mixing cylinder, the aluminum powder added at one time is mixed for 5-10min after the aluminum powder is added into a mixing tank, the ratio of the aluminum powder to the water in the mixing tank is 1: 1-3, the preferred ratio is 1:2, the rotating speed of a first stirring paddle is 5-50r/min, the preferred rotating speed is 40r/min, and the pH value of the water is 6.5-7.5.
And secondly, because dangerous gases such as oxynitride, hydrogen and the like can be generated in the reaction process of the aluminum powder in the reaction tank, in order to avoid the occurrence of danger and influence on the quality of the alumina sol in the reaction process, the gas storage tank injects inert gas into the mixing tank to increase the pressure in the mixing tank, the inert gas is preferably nitrogen or argon, the pressure in the mixing tank is higher than the pressure in the reaction tank by 10-20KPa, so that the aluminum powder mixed slurry is injected into the reaction tank, and the injection process of the aluminum powder mixed slurry lasts for 2-5 min.
And thirdly, rotationally spraying by the washing component, spraying the inner wall of the material mixing tank for 10-20s, and washing the aluminum powder mixed slurry remained on the inner wall of the material mixing tank into the reaction tank.
Fourthly, repeating the steps S1-S3, and carrying out multi-batch feeding until 3-10 times of feeding.
When the aluminum powder storage device is used, the upper top plate 501 of the aluminum powder storage barrel 5 is opened, aluminum powder is injected into the aluminum powder storage barrel 5, water is injected into the water storage barrel 3, and the aluminum powder in the storage barrel enters the sleeve 701 through the feeding hole 705;
simultaneously, the second ball valve 921, the fourth ball valve 941 and the third motor 703 are opened, the third motor 703 drives the screw rod 702 to push the aluminum powder in the sleeve 701 into the mixing tank 104 through the feeding pipe 94, and simultaneously, the water in the water storage cylinder 3 enters the mixing tank 104 through the water inlet pipe 92;
starting the first motor 102 to drive the first stirring paddle 105 to stir the aluminum powder mixed slurry and enable the aluminum powder mixed slurry to move at a high speed, opening the third ball valve 931 and the first ball valve 911 after the stirring is finished, feeding the inert gas in the gas storage tank 4 into the material mixing tank 104, pushing the aluminum powder mixed slurry in the material mixing tank 104 into the reaction tank 203, and feeding the inert gas into the reaction tank 203 to prevent waste gas generated by the reaction from reacting with oxygen in the air to generate danger or pollute alumina sol in the reaction process;
when the aluminum powder mixed slurry in the mixing tank 104 enters the reaction tank 203, the fifth ball valve 951 is opened, water in the water storage cylinder 3 enters the spray nozzle 801, spraying and cleaning are started, the universal joint 802 rotates to drive the spray nozzle 801 to rotate, and the inner wall of the mixing tank 104 is cleaned in all directions;
the aluminum powder mixed slurry enters the reaction tank 203 to react with the reaction liquid, and the second motor 201 drives the second stirring paddle 204 to fully react without sedimentation.
When quantitative feeding is needed, the pressure sensing block senses the change of the aluminum powder storage amount in the aluminum powder storage barrel so as to realize quantitative feeding.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (10)
1. An automatic feeding device in the production process of aluminum sol is characterized by comprising a water storage cylinder (3), an aluminum powder storage cylinder (5), an aluminum powder feeding assembly (7), a weighing assembly (6), a gas storage tank (4), a mixing assembly (1), a reaction kettle (2) and a flushing assembly (8), wherein the mixing assembly (1) is connected with the reaction kettle (2) through a mixing pipe (91), the water storage cylinder (3) is connected with the mixing assembly (1) through a water inlet pipe (92), the gas storage tank (4) is connected with the mixing assembly (1) through a gas inlet pipe (93), the aluminum powder storage cylinder (5) is arranged above the aluminum powder feeding assembly (7), the aluminum powder feeding assembly (7) is connected with the mixing assembly (1) through a feeding pipe (94), the aluminum powder storage cylinder (5) is fixedly connected with the weighing assembly (6), the washing component (8) is arranged in the mixing component (1) and connected with the water storage barrel (3) through a washing pipe (95).
2. The automatic feeding device in the production process of the aluminum sol according to claim 1, wherein the mixing assembly (1) comprises a first motor (102), a mixing connector (103), a mixing tank (104) and a first stirring paddle (105), the cylinder of the mixing tank (104) is ellipsoidal, the first stirring paddle (105) is arranged inside the mixing tank (104), the first stirring paddle (105) is connected with the first motor (102), the first motor (102) rotates to drive the first stirring paddle (105) to rotate, and the outer wall of the first motor (102) is fixedly connected with the mixing tank (104) through the mixing connector (103);
one end of the mixing pipe (91) is communicated with the other end of the bottom of the mixing tank (104) and communicated with the reaction kettle (2), and a first ball valve (911) is arranged on the mixing pipe (91).
3. The automatic feeding equipment in the aluminum sol production process according to claim 2, wherein the reaction kettle (2) comprises a second motor (201), a reaction connecting piece (202), a reaction tank (203) and a second stirring paddle (204), the main body of the reaction tank (203) is ellipsoidal, the second stirring paddle (204) is arranged inside the reaction tank (203), the second stirring paddle (204) is connected with the second motor (201), the second motor (201) rotates to drive the second stirring paddle (204), and the outer wall of the second motor (201) is fixedly connected with the reaction tank (203) through the reaction connecting piece (202).
4. The automatic feeding equipment in the production process of the aluminum sol as claimed in claim 2, wherein the main body of the water storage tank (3) is of a cylinder structure with an upper opening;
the water inlet pipe (92) is communicated with a second ball valve (921), one end of the water inlet pipe (92) is communicated with the bottom end of the water storage cylinder (3), and the other end of the water inlet pipe (92) is communicated with the mixing tank (104).
5. The automatic feeding equipment in the production process of the aluminum sol as claimed in claim 1, wherein the inside of the gas storage tank (4) is of a hollow structure, one end of the gas adding pipe (93) is communicated with the inside of the gas storage tank (4), and the other end of the gas adding pipe (93) is communicated with the mixing component (1);
the air feeding pipe (93) is of a tubular structure, and a third ball valve (931) is communicated with the air feeding pipe (93).
6. The automatic feeding equipment in the alumina sol production process according to claim 5, wherein the main body of the aluminum powder storage cylinder (5) is of a cylindrical structure with a hollow interior, the aluminum powder storage cylinder (5) comprises an upper top plate (501), a side plate (502) and a conical hopper (503), the main body of the upper top plate (501) is of a circular plate structure, the main body of the side plate (502) is of an annular shape, the diameter of the outer peripheral wall of the side plate (502) is smaller than the circular diameter of the upper top plate (501), the cylinder of the conical hopper (503) is of an inverted conical cylinder structure, and a through hole is formed at the conical tip of the conical hopper (503).
7. The automatic feeding equipment in the alumina sol production process according to claim 6, wherein the weighing assembly (6) comprises a plurality of fixing rods (601), a plurality of fixing plates (602) and pressure sensing blocks (603), one end of each fixing rod (601) is fixedly connected with the corresponding fixing plate (602) and the other end of each fixing rod (601) is fixedly connected with the corresponding side plate (502), the main body of each fixing plate (602) is of a rectangular structure, and the pressure sensing blocks (603) are arranged at four corners of the rectangular bottom surface of each fixing plate (602).
8. The automatic feeding equipment in the aluminum sol production process according to claim 7, wherein the aluminum powder feeding assembly (7) comprises a sleeve (701), a screw rod (702), a third motor (703) and a support frame (704), one end of the sleeve (701) is communicated with the feeding pipe (94), the screw rod (702) is arranged inside the sleeve (701), one end of the screw rod (702) is connected with the third motor (703), the third motor (703) rotates to drive the screw rod (702) to rotate, one end of the sleeve (701), far away from the feeding pipe (94), is fixedly connected with the outer wall of the third motor (703), the length of the screw rod (702) is the same as that of the sleeve (701), and the support frame (704) is fixedly connected with the outer wall of the third motor (703);
a fourth ball valve (941) is arranged on the feeding pipe (94);
a feeding hole (705) is formed in the sleeve (701), and the feeding hole (705) is matched with the conical tip of the conical hopper (503).
9. The automatic feeding equipment in the alumina sol production process according to claim 8, wherein the flushing assembly (8) comprises a spray head (801) and a universal joint (802), the spray head (801) is arranged inside the mixing tank (104), and one end of the universal joint (802) is fixedly connected with the spray head (801) and the other end of the flushing pipe (95);
flushing pipe (95) one end intercommunication water storage section of thick bamboo (3) bottom other end intercommunication shower nozzle (801), be provided with fifth ball valve (951) on flushing pipe (95).
10. An aluminum powder batch feeding method in the production process of aluminum sol comprises the following steps,
S1，
the water storage cylinder injects water into the material mixing tank, the aluminum powder in the aluminum powder storage cylinder is weighed by the weighing component and then added into the material mixing tank, the aluminum powder added in a single time is mixed for 5-10min after being added into the material mixing tank, the proportion range of the aluminum powder and the water in the material mixing tank is 1: 1-3, the rotating speed of the first stirring paddle is 5-50r/min, the PH value of the water is 6.5-7.5,
S2，
the gas storage tank injects inert gas into the mixing tank to increase the gas pressure in the mixing tank, so that the gas pressure in the mixing tank is 10-20KPa higher than the pressure in the reaction tank, so that the aluminum powder mixed slurry is injected into the reaction tank, the injection process of the aluminum powder mixed slurry lasts for 2-5min,
S3，
the flushing component sprays rotationally to spray the inner wall of the material mixing tank for 10-20s, the aluminum powder mixed slurry remained on the inner wall of the material mixing tank is flushed into the reaction tank,
S4，
repeating the steps S1-S3, and carrying out multiple batches of feeding until 3-10 times of feeding.
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