CN215741831U - Feeding device for preparing nano aluminum oxide - Google Patents
Feeding device for preparing nano aluminum oxide Download PDFInfo
- Publication number
- CN215741831U CN215741831U CN202121091215.0U CN202121091215U CN215741831U CN 215741831 U CN215741831 U CN 215741831U CN 202121091215 U CN202121091215 U CN 202121091215U CN 215741831 U CN215741831 U CN 215741831U
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- Prior art keywords
- tank
- slurry
- discharge
- atomizing
- washing liquid
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 239000002002 slurry Substances 0.000 claims abstract description 47
- 239000007788 liquid Substances 0.000 claims abstract description 32
- 238000005406 washing Methods 0.000 claims abstract description 24
- 238000007599 discharging Methods 0.000 claims abstract description 10
- 238000003756 stirring Methods 0.000 claims description 33
- 238000009826 distribution Methods 0.000 claims description 16
- 230000007246 mechanism Effects 0.000 claims description 13
- 238000000889 atomisation Methods 0.000 claims description 2
- 239000000463 material Substances 0.000 abstract description 13
- 238000001694 spray drying Methods 0.000 abstract description 8
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 210000005056 cell body Anatomy 0.000 description 2
- 238000009776 industrial production Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009690 centrifugal atomisation Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002086 nanomaterial Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The utility model discloses a feeding device for preparing nano alumina, which comprises: the device comprises a slurry tank, washing liquor, a discharging filter box, an electric diaphragm pump, a buffer tank, an atomizing device and an automatic control device; a discharge hole arranged at the bottom of the slurry tank is connected with a feed inlet arranged at the upper part of a discharge filter box, a discharge pipe arranged at the bottom of the discharge filter box is connected with a feed inlet of an electric diaphragm pump through a three-way pipe, and a discharge liquid arranged at the bottom of a washing liquid tank is connected with the feed inlet of the electric diaphragm pump through a three-way pipe; and a slurry electromagnetic valve arranged on the discharge pipe, a washing liquid electromagnetic valve arranged on the discharge pipe and a pressure gauge arranged on the buffer tank are connected with an automatic control device. The utility model can accurately control the feeding pressure of the high-viscosity slurry, timely clean the conveying pipeline to prevent material blockage, and is beneficial to automatic spray drying feeding of the high-viscosity slurry.
Description
Technical Field
The utility model belongs to the field of nano alumina industrial production equipment, and particularly relates to a feeding device for preparing nano alumina.
Background
With the continuous progress of nano material science, nano aluminum oxide is widely applied to the fields of fine ceramics, composite materials, fluorescent materials, humidity-sensitive sensors, infrared absorption materials and the like due to the excellent performances of nano aluminum oxide in light, electricity, thermodynamics, chemical reactions and the like.
The spray drying method is an effective method for atomizing slurry into small droplets by utilizing high-speed operation of a centrifugal atomizer, and then rapidly drying and solidifying the small droplets into spherical solid-phase granulation particles with good fluidity, micron size or even dozens of microns under the action of a heat medium.
The spray drying technology is adopted for feeding high-viscosity slurry in the production of nano alumina, the spray drying technology is a key technology for feeding the production of the nano alumina, and the problems that the high-viscosity slurry is difficult to atomize, the discharge is low, the material is easy to block and the like exist in the feeding process by adopting the existing spray drying technology, so that the production of the nano alumina is difficult, the yield is low, the product quality is unstable, and the industrial production, the popularization and the application are not facilitated.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a spray drying feeding device for preparing high-viscosity slurry of nano alumina.
The utility model is realized by the following technical scheme.
A feed device for preparing nano alumina, characterized in that it comprises: a slurry tank (1), a washing liquid tank (2), a discharging filter box (13), an electric diaphragm pump (6), a buffer tank (7), an atomizing device (9) and an automatic control device (5); a discharge hole (12) formed in the bottom of the slurry tank (1) is connected with a feed hole formed in the upper part of a discharge filter box (13), a discharge pipe (19) formed in the bottom of the discharge filter box (13) is connected with a discharge pipe (16) formed in the bottom of the washing liquid tank (2) through a three-way pipe (20) and the feed hole of the electric diaphragm pump (6), and the electric diaphragm pump (6), the buffer tank (7) and the atomization device (9) are sequentially connected; and a slurry electromagnetic valve (3) arranged on the discharge pipe (19), a washing liquid electromagnetic valve (4) arranged on the discharge pipe (16), and a pressure gauge (8) arranged on the buffer tank (7) are connected with an automatic control device (5).
Further, slurry tank (1) includes first cell body (11), frame agitator (10), the rabbling mechanism setting of frame agitator (10) is in first cell body (11), the rabbling mechanism includes (mixing) shaft, stirring frame, the upper end of stirring frame is connected with the lower extreme of (mixing) shaft, the middle part of stirring frame is equipped with horizontally crosspiece paddle.
Furthermore, the height from the bottom of the stirring frame to the inner bottom of the first tank body (11) is 5 cm.
Further, the washing liquid tank (2) comprises a second tank body (15) and a blade type stirrer (14), and a stirring mechanism of the blade type stirrer (14) is arranged in the second tank body (15).
Further, atomizing device (9) include thick liquids plate of distributor (17), atomizing disk (18), thick liquids plate of distributor (17) sets up in atomizing disk (18), plate of distributor feed inlet (21) that thick liquids plate of distributor (17) upper end was equipped with passes through the pipe connection with the discharge gate that buffer tank (7) lateral wall was equipped with, plate of distributor discharge gate (22) that thick liquids plate of distributor (17) lateral wall was equipped with is connected with the feed inlet that atomizing disk (18) inner wall was equipped with.
Furthermore, the discharge hole (22) of the distribution plate is in a horn shape with a narrow inner part and a wide outer part.
Further, the device also comprises a material receiving bin (23), wherein the material receiving bin (23) is a hollow trapezoidal bin body, and the material receiving bin (23) is arranged outside the atomizing device (9).
The feeding device for preparing the nano alumina has the advantages that the feeding of the nano alumina slurry is realized by controlling all parts through the automatic control device, the feeding pressure of the high-viscosity slurry can be accurately controlled, the conveying pipeline is cleaned in time to prevent the blockage, and the automatic spray drying feeding of the high-viscosity slurry is facilitated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a side view of the atomizing device;
fig. 3 is a top view of the atomizing device.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1 to 3, a feeding apparatus for preparing nano alumina includes: the device comprises a slurry tank 1, a washing liquid tank 2, a discharge filter box 13, an electric diaphragm pump 6, a buffer tank 7, an atomizing device 9, an automatic control device 5 and a material receiving bin 23;
the slurry tank 1 comprises a first tank body 11 and a frame type stirrer 10, wherein the first tank body 11 is in a vertical cylinder shape, a discharge hole 12 is formed in the bottom of the first tank body, the frame type stirrer 10 comprises a stirring mechanism and a motor connected with the stirring mechanism, the stirring mechanism of the frame type stirrer 10 is arranged in the first tank body 11, the stirring mechanism of the frame type stirrer 10 comprises a stirring shaft and a stirring frame, the upper end of the stirring frame is connected with the lower end of the stirring shaft, the stirring frame is a rectangular frame, a horizontal crosspiece paddle blade is arranged in the middle of the stirring frame, and the height from the bottom of the stirring frame to the inner bottom of the first tank body 11 is 5 cm; the high-viscosity slurry can be uniformly stirred, and the blockage of a feed opening due to material deposition is reduced;
the washing liquid tank 2 comprises a second tank body 15 and a blade type stirrer 14, the second tank body 15 is in a vertical cylinder shape, the blade type stirrer 14 comprises a stirring mechanism and a motor, the stirring mechanism comprises a stirring shaft and a stirring paddle, the upper end of the stirring paddle is connected with the lower end of the stirring shaft, the upper end of the stirring shaft is connected with the motor, the stirring mechanism of the blade type stirrer 14 is arranged in the second tank body 15, and a liquid outlet pipe 16 is arranged at the bottom of the washing liquid tank 2; the washing liquid (generally deionized water) is filled in the washing liquid tank 2, and when the feeding pressure is too high, the pipeline is washed, so that the blockage of the atomizing device can be effectively prevented, and the maintenance frequency is reduced;
the discharging filter box 13 is a filter screen type filter, the mesh number of the filter screens is determined according to the particle size of slurry, a feeding hole arranged at the upper part of the discharging filter box 13 is connected with a discharging hole 12 arranged at the bottom of the slurry tank 1, and a discharging pipe 19 is arranged at the bottom of the discharging filter box 13; the discharging filter box 13 can effectively block coarse particles such as impurities, material flocculation and the like, stabilize the product quality and reduce the blockage of an atomizing device;
a feed inlet arranged on the electric diaphragm pump 6 is connected with a discharge pipe 19 arranged at the bottom of the discharge filter box 13 and a liquid outlet pipe 16 arranged at the bottom of the washing liquid tank 2 through a three-way pipe 20, a discharge outlet arranged on the electric diaphragm pump 6 is connected with a feed inlet arranged on the side wall of one side of the buffer tank 7, and the buffer tank 7 is a vertical tank body; slurry output by the discharge pipe 19 and washing liquid output by the liquid outlet pipe 16 are combined through a three-way pipe 20 and then are provided with feeding power by the electric diaphragm pump 6, and the feeding power is controlled in a variable frequency mode and can be adjusted in speed;
the atomizing device 9 comprises a slurry distribution disc 17 and an atomizing disc 18, the slurry distribution disc 17 is arranged in the atomizing disc 18, a distribution disc feed port 21 arranged at the upper end of the slurry distribution disc 17 is connected with a discharge port arranged on the side wall of the buffer tank 7 through a pipeline, a distribution disc discharge port 22 arranged on the side wall of the slurry distribution disc 17 is connected with a feed port arranged on the inner wall of the atomizing disc 18, and the distribution disc discharge port 22 is in a horn shape with a narrow inside and a wide outside; the bonding of high-viscosity slurry at the position can be effectively avoided, and the blocking of an atomizing device is reduced; the slurry distribution disc 17 and the atomizing disc 18 are both hollow circular rings.
The material receiving bin 23 is a hollow trapezoid bin body, and the material receiving bin 23 is arranged outside the atomizing device 9 and used for receiving materials.
The slurry electromagnetic valve 3 arranged on the discharge pipe 19, the washing liquid electromagnetic valve 4 arranged on the liquid outlet pipe 16 and the pressure gauge 8 arranged on the buffer tank 7 are all connected with the automatic control device 5.
The pressure gauge 8 transmits a feeding pressure signal to the automatic control device 5 (a PLC controller), and the automatic control device 5 controls the slurry electromagnetic valve 3 and the washing liquid electromagnetic valve 4 to be switched on and off according to the pressure signal to feed or flush; the slurry is finally conveyed to an atomizing device 9 and is distributed to an atomizing disc 18 through a slurry distribution disc 17 for centrifugal atomization.
Examples
The high-viscosity slurry is not more than 2/3 of the height of the slurry tank 1, the frame type stirrer 10 is used for quickly stirring, the slurry is filtered by the 200-mesh discharging filter box 13, and the feeding frequency of the electric diaphragm pump 6 is adjusted, so that the outlet temperature of the atomizing device 9 is controlled at about 105 ℃. When the device normally works, the slurry electromagnetic valve 3 is opened, the washing liquid electromagnetic valve 4 is closed, high-viscosity slurry enters the atomizing device 9 through the electric diaphragm pump 6 to be dried, and the pressure of the electric contact pressure gauge 8 of the buffer tank 7 is 0.10 Mpa; when the pressure of the pressure gauge 8 begins to increase, the phenomenon of blockage of the atomizing device is indicated, when the pressure of the pressure gauge 8 reaches 0.15Mpa, the automatic control device 5 closes the slurry electromagnetic valve 3, opens the washing liquid electromagnetic valve 4, and the washing liquid enters the atomizing device to flush the diversion disc and the atomizing disc; when the pressure of the pressure gauge 8 is reduced to 0.10Mpa again, which indicates that the blockage phenomenon of the atomizing device is solved, the automatic control device 5 opens the slurry electromagnetic valve 3 again, closes the washing liquid electromagnetic valve 4, and enters a normal spray drying operation flow.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the utility model. It should be noted that other equivalent modifications can be made by those skilled in the art in light of the teachings of the present invention, and all such modifications can be made as are within the scope of the present invention.
Claims (7)
1. A feed device for preparing nano alumina, characterized in that it comprises: a slurry tank (1), a washing liquid tank (2), a discharging filter box (13), an electric diaphragm pump (6), a buffer tank (7), an atomizing device (9) and an automatic control device (5); a discharge hole (12) formed in the bottom of the slurry tank (1) is connected with a feed hole formed in the upper part of a discharge filter box (13), a discharge pipe (19) formed in the bottom of the discharge filter box (13) is connected with a discharge pipe (16) formed in the bottom of the washing liquid tank (2) through a three-way pipe (20) and the feed hole of the electric diaphragm pump (6), and the electric diaphragm pump (6), the buffer tank (7) and the atomization device (9) are sequentially connected; and a slurry electromagnetic valve (3) arranged on the discharge pipe (19), a washing liquid electromagnetic valve (4) arranged on the discharge pipe (16), and a pressure gauge (8) arranged on the buffer tank (7) are connected with an automatic control device (5).
2. The feeding device according to claim 1, wherein the slurry tank (1) comprises a first tank body (11) and a frame type stirrer (10), a stirring mechanism of the frame type stirrer (10) is arranged in the first tank body (11), the stirring mechanism comprises a stirring shaft and a stirring frame, the upper end of the stirring frame is connected with the lower end of the stirring shaft, and a horizontal crosspiece blade is arranged in the middle of the stirring frame.
3. The feeding device according to claim 2, characterized in that the bottom of the stirring frame is 5 cm from the inner bottom of the first tank (11).
4. A feeding device according to any one of claims 1-3, characterized in that the washing liquid tank (2) comprises a second tank (15), a blade agitator (14), and the agitating mechanism of the blade agitator (14) is arranged in the second tank (15).
5. A feeding device according to any one of claims 1-3, characterized in that the atomizing device (9) comprises a slurry distribution plate (17) and an atomizing plate (18), the slurry distribution plate (17) is disposed in the atomizing plate (18), a distribution plate feed port (21) disposed at the upper end of the slurry distribution plate (17) is connected to a discharge port disposed on the side wall of the buffer tank (7) through a pipeline, and a distribution plate discharge port (22) disposed on the side wall of the slurry distribution plate (17) is connected to a feed port disposed on the inner wall of the atomizing plate (18).
6. The feeding device according to claim 5, characterized in that the outlet (22) of the dispensing disc is flared with a narrow inside and a wide outside.
7. A feeding device according to any one of claims 1-3, characterized in that the device further comprises a receiving bin (23), the receiving bin (23) is a hollow trapezoidal bin body, and the receiving bin (23) is arranged outside the atomizing device (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121091215.0U CN215741831U (en) | 2021-05-20 | 2021-05-20 | Feeding device for preparing nano aluminum oxide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121091215.0U CN215741831U (en) | 2021-05-20 | 2021-05-20 | Feeding device for preparing nano aluminum oxide |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215741831U true CN215741831U (en) | 2022-02-08 |
Family
ID=80097706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121091215.0U Active CN215741831U (en) | 2021-05-20 | 2021-05-20 | Feeding device for preparing nano aluminum oxide |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215741831U (en) |
-
2021
- 2021-05-20 CN CN202121091215.0U patent/CN215741831U/en active Active
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| GR01 | Patent grant |