CN116678191A - Drying device is used in nanometer zinc oxide preparation - Google Patents
Drying device is used in nanometer zinc oxide preparation Download PDFInfo
- Publication number
- CN116678191A CN116678191A CN202310966913.8A CN202310966913A CN116678191A CN 116678191 A CN116678191 A CN 116678191A CN 202310966913 A CN202310966913 A CN 202310966913A CN 116678191 A CN116678191 A CN 116678191A
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- Prior art keywords
- zinc oxide
- plate
- stirring
- material guiding
- preset distance
- Prior art date
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- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims abstract description 228
- 239000011787 zinc oxide Substances 0.000 title claims abstract description 114
- 238000001035 drying Methods 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims description 3
- 239000000463 material Substances 0.000 claims abstract description 160
- 238000003756 stirring Methods 0.000 claims abstract description 135
- 238000007873 sieving Methods 0.000 claims description 15
- 230000009471 action Effects 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 4
- 238000012216 screening Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 abstract description 113
- 238000005096 rolling process Methods 0.000 abstract description 7
- 238000000429 assembly Methods 0.000 description 8
- 230000000712 assembly Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 238000001354 calcination Methods 0.000 description 2
- 229910002092 carbon dioxide Inorganic materials 0.000 description 2
- 239000001569 carbon dioxide Substances 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000000197 pyrolysis Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000008367 deionised water Substances 0.000 description 1
- 229910021641 deionized water Inorganic materials 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- -1 pyrolysis method Chemical compound 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/22—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in stationary dishes, trays, pans, or other mainly-open receptacles, with moving stirring devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/004—Nozzle assemblies; Air knives; Air distributors; Blow boxes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/04—Agitating, stirring, or scraping devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/18—Chambers, containers, receptacles of simple construction mainly open, e.g. dish, tray, pan, rack
Abstract
The application relates to the technical field of drying, in particular to a drying device for preparing nano zinc oxide, which comprises a cylinder body, wherein materials enter from the top of the cylinder body and are discharged from the bottom of the cylinder body, a hot dryer is used for drying the materials in the cylinder body, and a first material guiding disc and a second material guiding disc are sequentially connected in the cylinder body downwards along the axis of the cylinder body. The application is provided with the first guide tray, the first stirring plate, the second stirring plate and the rotating shaft, wherein the first stirring plate can stir zinc oxide particles to a first preset distance in a direction away from the center of the first guide tray, the second stirring plate can stir zinc oxide particles with large particle sizes to a second preset distance in a direction close to the center of the first guide tray, and the second preset distance is smaller than the first preset distance, so that the stay time and the rolling distance of the zinc oxide particles with large particle sizes on the first guide tray are longer than the rolling distance of the zinc oxide particles with small particle sizes on the first guide tray, and the drying degree of the zinc oxide particles with large particle sizes is basically consistent.
Description
Technical Field
The application relates to the technical field of drying, in particular to a drying device for preparing nano zinc oxide.
Background
Nano zinc oxide is a high-functional fine inorganic product which exhibits many special properties such as non-mobility, fluorescence, ability to absorb and scatter ultraviolet rays, etc., and can be manufactured into gas sensors, phosphors, varistors, ultraviolet shields, etc. by utilizing its wonderful properties in the fields of light, electricity and magnetism. There are many methods for preparing nano zinc oxide, such as pyrolysis method, chemical vapor deposition method, ultrasonic chemical synthesis method, etc. Wherein the first step of pyrolysis is as follows: putting zinc oxide into deionized water with the weight of 5-10 times of that of the zinc oxide and the temperature of 40-75 ℃ and uniformly stirring to prepare zinc oxide solution; and a second step of: introducing carbon dioxide gas into the zinc oxide solution, and stirring the zinc oxide solution at the same time; and a third step of: heating the zinc oxide solution to 85-90 ℃, and preserving heat for 240-450 minutes; fourth step: stopping introducing carbon dioxide gas, heating, filtering the reacted solution, drying at a temperature below 400 ℃, and pulverizing into particles; fifth step: and roasting the crushed zinc oxide particles at the temperature of 250-600 ℃ to obtain the nano zinc oxide.
In the prior art, a tray dryer is often used for drying crushed zinc oxide particles, such as a multi-layer rotary tray dryer disclosed in the patent application publication CN107883706 a. Because the particle size of the crushed zinc oxide particles is not uniform, when the existing disc dryer is used for drying the zinc oxide particles, the zinc oxide particles with different particle sizes are not easy to ensure to reach proper drying degree, and the calcination of the crushed zinc oxide particles in the fifth step can be influenced.
Disclosure of Invention
Based on this, it is necessary to provide a drying device for preparing nano zinc oxide, which can screen zinc oxide particles while drying the zinc oxide particles, so that the residence time of the zinc oxide particles with large particle size on the rotating disk is longer than that of the zinc oxide particles with small particle size on the rotating disk, and thus the drying degree of the zinc oxide particles with large particle size is more uniform.
The above purpose is achieved by the following technical scheme:
a drying device for preparing nano zinc oxide comprises:
a cylinder body, wherein materials enter from the top of the cylinder body and are discharged from the bottom;
the hot dryer is used for drying the materials in the cylinder;
a first material guiding disc and a second material guiding disc are sequentially connected in the cylinder body from top to bottom along the axis of the cylinder body, the diameter of the second material guiding disc is larger than that of the first material guiding disc, and a material guiding ring groove is formed in the center of the second material guiding disc;
the center of the cylinder body is rotationally connected with a rotating shaft, the rotating shaft penetrates through the centers of the first guide tray and the second guide tray and is rotationally connected with the first guide tray and the second guide tray, a stirring assembly is arranged at intervals in the circumferential direction of the rotating shaft and comprises a first stirring rod, a second stirring plate, a second stirring rod and a plurality of first stirring plates, the first stirring rod and the second stirring rod are circumferentially arranged on the rotating shaft at intervals, and a sieving groove is formed in the lower portion of the second stirring plate;
the plurality of first material stirring plates are obliquely arranged on the first material stirring rod at intervals along the axis of the first material stirring rod, and the first material stirring plates are configured to stir the materials on the first material guiding plate for a first preset distance in a direction away from the center of the first material guiding plate when the first material stirring plates are in rotary contact with the first material guiding plate; the second material stirring plate is obliquely arranged on the second material stirring rod along the axis of the second material stirring rod in the direction opposite to the first material stirring plate, and the second material stirring plate is configured to stir the material with the grain diameter larger than the groove width of the screening groove on the first material guiding plate for a second preset distance in the direction approaching to the center of the first material guiding plate when the second material stirring plate is in rotary contact with the first material guiding plate; the first preset distance is greater than the second preset distance.
In one embodiment, the first material stirring plates are further configured to stir the material on the second material guiding plate to a first preset distance in a direction close to the center of the second material guiding plate when the first material stirring plates are in rotary contact with the second material guiding plate, the first material stirring plates are jointly used for stirring the material into the material guiding ring groove, and the second material stirring plates are further configured to stir the material with the grain size larger than the grain size of the screening groove on the second material guiding plate to a second preset distance in a direction far from the center of the second material guiding plate when the second material stirring plates are in rotary contact with the second material guiding plate.
In one embodiment, the second material shifting plates in each material shifting assembly are multiple, and the multiple second material shifting plates are inclined and arranged at intervals along the axis of the second material shifting rod in the opposite direction to the first material shifting plates.
In one embodiment, the screen slot has an adjustable slot width.
In one embodiment, first baffle and second baffle elastic connection just can follow the axis slip of barrel in the barrel, the second is dialled the flitch and is included grillage, first pinion rack, the second pinion rack, extension spring and guide unit, the grillage is fixed to be set up in the second and is dialled the material pole, first pinion rack elastic connection is in the below of grillage and first pinion rack can follow the axis slip of pivot, one side of grillage is connected with the extension spring, the one end that the grillage was kept away from to the extension spring is connected with the second pinion rack, guide unit sets up between first pinion rack and second pinion rack, when first pinion rack moves down along the axis of pivot, the second pinion rack can move simultaneously to the direction that is close to the barrel bottom under the effect of guide unit under the pulling force of extension spring, and then make the groove width of sieve groove increase.
In one embodiment, the guide unit includes a first inclined block disposed on the first toothed plate and a second inclined block disposed on the second toothed plate.
In one embodiment, a distance sensor is disposed in the cylinder, and when the first guide tray and the second guide tray slide downwards for a preset distance, the distance sensor can transmit an electric signal to the hot dryer, so that the power of the hot dryer is increased.
In one embodiment, the top of the cylinder is provided with an auger conveyor, one side of the upper part of the auger conveyor is provided with a feed hopper, the other side of the lower part of the auger conveyor is provided with a material guide pipe, and one end of the material guide pipe, which is far away from the auger conveyor, is communicated with the cylinder.
In one embodiment, a discharge pipe is arranged at the bottom of the cylinder.
The beneficial effects of the application are as follows:
according to the application, the first guide tray, the first stirring plate, the second stirring plate and the rotating shaft are arranged, in the continuous rotating process of the rotating shaft, the first stirring plate can stir the zinc oxide particles to a first preset distance in a direction away from the center of the first guide tray, the second stirring plate can stir the zinc oxide particles with large particle sizes to a second preset distance in a direction close to the center of the first guide tray, and the second preset distance is smaller than the first preset distance, so that the residence time of the zinc oxide particles with large particle sizes on the first guide tray and the rolling distance of the zinc oxide particles with rolling distance larger than the stopping time of the zinc oxide particles with small particle sizes on the first guide tray are enabled, the drying degree of the zinc oxide particles with large particle sizes is basically consistent, and the influence on the quality of the calcined nano zinc oxide particles due to inconsistent drying degrees of the zinc oxide particles with different particle sizes is avoided.
Drawings
FIG. 1 is a schematic diagram of the whole structure of a drying device for preparing nano zinc oxide;
FIG. 2 is a schematic diagram showing a semi-sectional perspective view of a drying device for preparing nano zinc oxide according to the present application;
FIG. 3 is an enlarged schematic view of the structure shown in FIG. 2A;
FIG. 4 is a side view of a drying device for preparing nano zinc oxide according to the present application;
FIG. 5 is a sectional view of a drying apparatus for preparing nano zinc oxide according to the present application;
FIG. 6 is an enlarged schematic view of the structure shown at B in FIG. 5;
FIG. 7 is an enlarged schematic view of the structure of FIG. 5 at C;
FIG. 8 is a schematic structural view of a second deflector plate in a drying device for preparing nano zinc oxide according to the present application;
fig. 9 is a schematic structural view of a guiding unit in a drying device for preparing nano zinc oxide according to the present application.
Wherein:
100. a cylinder; 210. a first material guiding disc; 220. a second material guiding disc; 221. a material guiding ring groove; 310. a stirring assembly; 311. the first material stirring plate; 312. the first material stirring rod; 313. a second material stirring rod; 314. the second material stirring plate; 3141. screening groove; 3142. a plate frame; 3143. a first toothed plate; 3144. a second toothed plate; 3145. a tension spring; 3146. a first sloping block; 3147. a second sloping block; 3148. a mounting member; 320. a rotating shaft; 330. a motor; 400. a hot dryer; 500. a distance sensor; 510. an induction block; 610. an auger conveyor; 620. a feed hopper; 630. a material guiding pipe; 700. a discharge pipe; 810. a first connecting rod; 820. a second connecting rod; 830. a connecting spring; 900. a bracket; 1000. an observation port I; 2000. and a second observation port.
Detailed Description
The present application will be further described in detail below with reference to examples, which are provided to illustrate the objects, technical solutions and advantages of the present application. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the application.
The numbering of components herein, such as "first," "second," etc., is used merely to distinguish between the described objects and does not have any sequential or technical meaning. The term "coupled" as used herein includes both direct and indirect coupling (coupling), unless otherwise indicated. In the description of the present application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element in question must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application.
In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
As shown in fig. 1-9, a drying device for preparing nano zinc oxide comprises a barrel 100 and a hot dryer 400, wherein zinc oxide particles enter from the top of the barrel 100 and are discharged from the bottom, the hot dryer 400 is arranged on one side of the barrel 100 and is communicated with the barrel 100 and is used for conveying high-temperature air into the barrel 100, a first material guide disc 210 and a second material guide disc 220 are sequentially connected in the barrel 100 from top to bottom along the axis of the barrel 100, the diameter of the second material guide disc 220 is larger than that of the first material guide disc 210, a material guide ring groove 221 is formed in the center of the second material guide disc 220, a rotating shaft 320 is rotatably connected with the center of the barrel 100, the rotating shaft 320 penetrates through the centers of the first material guide disc 210 and the second material guide disc 220 and is rotatably connected with the first material guide disc 210 and the second material guide disc 220, a stirring assembly 310 is arranged at intervals in the circumferential direction of the rotating shaft 320, the stirring assembly 310 comprises a first material stirring rod 312, a second stirring rod 313 and a plurality of first stirring plates 311, the first stirring rods 312 and the second stirring plates 313 are arranged at intervals in the circumferential direction of the second stirring rods 313, and a sieve groove 41 is formed in the circumferential direction of the second stirring rods 320;
the plurality of first stirring plates 311 are inclined along the axis of the first stirring rod 312 and are arranged on the first stirring rod 312 at intervals, and the first stirring plates 311 are configured to stir zinc oxide particles on the first guide tray 210 for a first preset distance in a direction away from the center of the first guide tray 210 when the first stirring plates 311 are in rotary contact with the first guide tray 210; the second stirring plate 314 is obliquely arranged on the second stirring rod 313 along the axis of the second stirring rod 313 in the direction opposite to the first stirring plate 311, and the second stirring plate 314 is configured to stir zinc oxide particles with the grain diameter larger than the groove width of the sieving groove 3141 on the first guiding plate 210 to a second preset distance in the direction approaching the center of the first guiding plate 210 when the second stirring plate 314 is in rotary contact with the first guiding plate 210; the first preset distance is greater than the second preset distance.
When in use, the hot dryer 400 is started, high-temperature air is conveyed into the cylinder 100, then zinc oxide particles to be dried are continuously added into the cylinder 100 from the top of the cylinder 100 (the flow cannot be large, the zinc oxide particles are prevented from being piled up on the first material guiding disc 210), so that the zinc oxide particles can fall onto the first material guiding disc 210, meanwhile, the rotating shaft 320 starts to rotate at a low speed to neglect the influence of centrifugal force on the movement of the zinc oxide particles as much as possible, the rotating shaft 320 drives the first material stirring rod 312 and the second material stirring rod 313 to rotate around the center of the rotating shaft 320, a plurality of first material stirring plates 311 arranged on the first material stirring rod 312 push a first preset distance in the direction away from the center of the first material guiding disc 210 under the side guiding action of the inclined first material stirring plates 311 after contacting with the zinc oxide particles on the first material guiding disc 210, with the continuous rotation of the rotating shaft 320, the zinc oxide particles are contacted with the second stirring plate 314 after being separated from the contact with the first stirring plate 311, because the inclination direction of the second stirring plate 314 is opposite to that of the first stirring plate 311, the zinc oxide particles with the grain diameter larger than the groove width of the sieving groove 3141 on the first material guiding disc 210 are stirred by the second stirring plate 314 for a second preset distance towards the direction close to the first material guiding disc 210, the zinc oxide particles with the grain diameter smaller than the sieving groove 3141 are kept at the current position, the zinc oxide particles with the grain diameter larger than the groove width of the sieving groove 3141 are simply called as zinc oxide with large grain diameter, therefore after the zinc oxide particles are contacted with the first stirring plate 311 and the second stirring plate 314 once, the displacement of the zinc oxide particles with the large grain diameter moving towards the direction far from the center of the first material guiding disc 210 is smaller than the displacement of the zinc oxide particles with the small grain diameter, the moving distance of the zinc oxide particles with large particle size is larger than that of the zinc oxide particles with small particle size, so that before the zinc oxide particles are stirred by the first stirring plate 311 to fall from the edge of the first guide tray 210, the zinc oxide particles with large particle size roll on the first guide tray 210 more weeks than the zinc oxide particles with small particle size, and the residence time on the first guide tray 210 is longer, thereby enabling the drying degree of the zinc oxide particles with large particle size to be basically consistent, and avoiding influencing the quality of the nano zinc oxide particles obtained by calcination due to inconsistent drying degree of the zinc oxide particles with different particle sizes.
It is also added that, to drive the rotation shaft 320 to rotate, a motor 330 may be disposed at the bottom of the cylinder 100, and the motor 330 drives the rotation shaft 320 to rotate.
For convenience of understanding, it may be assumed that the first preset distance is 3 mm and the second preset distance is 2 mm, so that the zinc oxide particles with large particle size roll 5 mm after contacting the first deflector 311 and the second deflector 314 once, respectively, the displacement is 1 mm, and the zinc oxide particles with small particle size roll 3 mm after contacting the first deflector 311 and the second deflector 314 once, respectively, the displacement is 3 mm, so that the zinc oxide particles with large particle size roll more weeks on the first deflector 210 and stay on the first deflector 210 longer than the zinc oxide particles with small particle size before being deflected by the first deflector 311 to fall from the edge position of the first deflector 210.
It is also added that, in order to facilitate the installation of the first deflector 311 and the second deflector 314, a mounting member 3148 may be connected to the upper ends of the first deflector 311 and the second deflector 314, and the first deflector 311 is mounted on the first deflector rod 312 and the second deflector 314 is mounted on the second deflector rod 313 through the mounting member 3148.
In order to avoid that zinc oxide particles get stuck in the sieve trough 3141, a vibration source, such as a small vibration motor or other device capable of generating knocking vibration, as known in the art, may be provided on the second deflector rod 313.
It should be noted that, the zinc oxide particles added into the barrel 100 have a particle size smaller than the majority of the sieve tank 3141 and a particle size larger than the minority of the sieve tank 3141, so that during use, the sieve tank 3141 is not blocked by the zinc oxide particles with a large particle size, and normal sieving cannot be performed.
In a further embodiment, the first material stirring plates 311 are further configured such that when the first material stirring plates 311 are in rotational contact with the second material guiding plate 220, each first material stirring plate 311 can stir the material on the second material guiding plate 220 to a first preset distance in a direction approaching to the center of the second material guiding plate 220, the plurality of first material stirring plates 311 cooperate to stir the material into the material guiding ring groove 221, the second material shifting plate 314 is further configured to shift the material with the grain size larger than the groove width of the screen groove 3141 on the second material guiding plate 220 to a second preset distance away from the center of the second material guiding plate 220 when the second material shifting plate 314 is in rotational contact with the second material guiding plate 220, wherein the first preset distance is larger than the second preset distance.
Similarly, after the zinc oxide particles roll from the first guide tray 210 to the second guide tray 220, the same first deflector 311 pushes the zinc oxide particles to a first preset distance in a direction close to the guide ring groove 221, and the second deflector 314 pushes the zinc oxide particles with large particle size to a second preset distance in a direction far from the guide ring groove 221, so that the residence time and the rolling distance of the zinc oxide particles with large particle size on the second guide tray 220 are also longer than the rolling distance of the zinc oxide particles with small particle size on the second guide tray 220.
In the drawings, in order to avoid a decrease in clarity of the drawings caused by the array of the kick-out assemblies 310, only one group of kick-out assemblies 310 is shown in fig. 2, and the kick-out assemblies 310 not shown will be understood and implemented by those skilled in the art based on the description herein.
In a further embodiment, as shown in fig. 2, the first guide tray 210 and the second guide tray 220 are multiple, the multiple first guide trays 210 and the multiple second guide trays 220 are alternately arranged at equal intervals along the axis of the barrel 100, the corresponding material stirring assemblies 310 are also provided with multiple groups, the material stirring assemblies 310 are arranged at equal intervals along the axis of the barrel 100, and the material stirring assemblies 310 are in contact with the first guide tray 210 or the material stirring assemblies 310 below the material stirring assemblies; by providing a plurality of sets of the kick-out assembly 310, the first guide tray 210 and the second guide tray 220, the drying uniformity of the large-sized zinc oxide particles and the small-sized zinc oxide particles can be made more remarkable.
In a further embodiment, as shown in fig. 2 and 3, a plurality of second stirring plates 314 are provided in each stirring assembly 310, and the plurality of second stirring plates 314 are inclined and spaced along the axis of the second stirring rod 313 in the opposite direction to the first stirring plate 311, so as to further increase the rolling path and residence time of the large-particle-size zinc oxide particles on the first guide tray 210 or the second guide tray 220, so that the drying uniformity of the large-particle-size zinc oxide particles and the small-particle-size zinc oxide particles is more remarkable.
In a further embodiment, the width of the sieving groove 3141 is adjustable, when the proportion of large-size zinc oxide particles in the zinc oxide particles entering the barrel 100 from the top of the barrel 100 is high, the large-size zinc oxide particles are easily blocked in the sieving groove 3141, so that the sieving groove 3141 cannot be used for sieving large-size zinc oxide particles and small-size particles, and therefore, the width of the sieving groove 3141 needs to be properly adjusted to be large, so that both small-size zinc oxide particles and large-size zinc oxide particles can pass through the sieving groove 3141, and the effect of delaying the flow speed of the large-size zinc oxide particles can be achieved on the premise of ensuring normal flow of the large-size zinc oxide particles.
It is also added that in order to achieve the desired degree of drying of the large size zinc oxide particles, the power of the thermal dryer 400 needs to be properly increased while properly increasing the slot width of the screen slot 3141, thereby enabling the desired degree of drying of the zinc oxide particles exiting the drum 100.
In a further embodiment, the first guide tray 210 and the second guide tray 220 are elastically connected in the barrel 100 and the first guide tray 210 and the second guide tray 220 can elastically slide along the axis of the barrel 100 by a preset distance, in order to realize the elastic sliding of the first guide tray 210 and the second guide tray 220, specifically, a second connecting rod 820 is provided at the bottom of the barrel 100, a first connecting rod 810 is connected to the side of the first guide tray 210 and the second guide tray 220, the first connecting rod 810 and the second connecting rod 820 are slidably connected and a connecting spring 830 is provided at the connection, the second deflector 314 comprises a plate frame 3142, a first toothed plate 3143, a second toothed plate 3144, a tension spring 3145 and a guiding unit, the plate frame 3142 is fixedly provided at the second deflector 313, the first toothed plate 3143 is elastically connected below the plate frame 3142, the first toothed plate 3143 can slide along the axis of the rotating shaft 320, one side of the plate frame 3142 is connected with a tension spring 3145, one end of the tension spring 3145, which is far away from the plate frame 3142, is connected with the second toothed plate 3144, the guiding unit is arranged between the plate frame 3142 and the second toothed plate 3144, when the first toothed plate 3143 moves downwards along the axis of the rotating shaft 320, the second toothed plate 3144 can move along the length direction of the plate frame 3142 under the tensile force of the tension spring 3145 and simultaneously move towards the direction close to the bottom of the cylinder 100 under the tensile force of the tension spring 3145, so that the groove width of the material sieving groove 3141 is increased, and the tension spring 3145 is arranged in a maximum stretching state when no zinc oxide particles exist on the first material guiding disc 210 and the second material guiding disc 220;
when the number of the large-particle zinc oxide particles on the first guide tray 210 and the second guide tray 220 increases, the pressure applied to the connecting spring 830 increases, the first guide tray 210 and the second guide tray 220 slide towards the bottom of the cylinder 100, under the action of the spring thrust between the first toothed plate 3143 and the plate frame 3142, the first toothed plate 3143 slides towards the bottom of the cylinder 100 synchronously, and under the action of the elastic tension of the tension spring 3145, the second toothed plate 3144 slides towards the side close to the tension spring 3145, the stretching amount of the tension spring 3145 decreases, the tooth space between the second toothed plate 3144 and the first toothed plate 3143 increases, and meanwhile, under the guiding action of the guiding unit, the first toothed plate 3143 is also forced to move towards the bottom of the cylinder 100 until the bottom of the first toothed plate 3143 is flush with the bottom of the second toothed plate 3144, and at this time the first toothed plate 3143 and the second toothed plate 3144 remain in contact with the first guide tray 210 or the second guide tray 220, so as to achieve the purpose of adjusting the sieve groove 3141. In other embodiments, a telescoping mechanism (e.g., an electric telescoping rod, etc.) may also be provided between second toothed plate 3144 and first toothed plate 3143 to control lateral misalignment movement between second toothed plate 3144 or first toothed plate 3143.
Note that, since the screen slot 3141 is formed by a gap formed by the lateral misalignment of the teeth of the first and second tooth plates 3143 and 3144, the width of the screen slot 3141 can be adjusted by adjusting the lateral misalignment distance of the teeth between the first and second tooth plates 3143 and 3144.
In a further embodiment, the guide unit includes a first inclined block 3146 and a second inclined block 3147, the first inclined block 3146 is disposed on the second toothed plate 3144, the second inclined block 3147 is disposed on the plate frame 3142, when the first or second tray 210 or 220 moves down, the bottom of the second toothed plate 3144 loses the supporting force, and thus the second toothed plate 3144 moves toward a side close to the tension spring 3145 under the tensile force of the tension spring 3145, and simultaneously the second toothed plate 3144 moves down synchronously by the cooperation of the first and second inclined blocks 3146 and 3147.
In a further embodiment, as shown in fig. 6, a distance sensor 500 is disposed in the cylinder 100, and when the first and second guide trays 210 and 220 slide downward for a predetermined distance, the distance sensor 500 can transmit an electric signal to the hot dryer 400 so that the power of the hot dryer 400 increases, and as a preferred embodiment, the distance sensor 500 may be disposed on the second connection rod 820 and the sensing block 510 may be disposed on the first connection rod 810, so that when the compression amount of the connection spring 830 increases, the distance between the sensing block 510 and the distance sensor 500 decreases, and the sensing block 510 can transmit a varying electric signal to the hot dryer 400 so that the power of the hot dryer 400 increases, thereby accelerating the drying of zinc oxide material inside the cylinder 100.
In a further embodiment, as shown in fig. 1, an auger conveyor 610 is disposed at the top of the cylinder 100, a feed hopper 620 is disposed at one side of the upper portion of the auger conveyor 610, a material guiding pipe 630 is disposed at the other side of the lower portion of the auger conveyor 610, and one end of the material guiding pipe 630 away from the auger conveyor 610 is communicated with the cylinder 100; in operation, zinc oxide particles are thrown into the feed hopper 620, conveyed to the position of the material guiding pipe 630 by the auger conveyor 610, and then conveyed into the cylinder 100 by the material guiding pipe 630; in other embodiments, the guide tube 630 may be disposed near the center of the top of the cylinder 100 such that zinc oxide particles falling from the guide tube 630 can fall near the center of the first guide tray 210 therebelow.
In a further embodiment, a discharging pipe 700 is provided at the bottom of the cylinder 100, and the discharging pipe 700 is provided for discharging the dried zinc oxide particles; in other embodiments, the discharge pipe 700 may be provided at a lower side of the cylinder 100.
In a further embodiment, the side wall of the barrel 100 is further provided with a first observation port 1000 and a second observation port 2000, and transparent glass is arranged on the first observation port 1000 and the second observation port 2000, so that a worker can observe the movement state of zinc oxide particles in the barrel 100 through the first observation port 1000 and the second observation port 2000.
In a further embodiment, a bracket 900 is provided at the bottom of the barrel 100 for supporting the barrel 100.
The technical features of the above embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.
The above examples merely represent a few embodiments of the present application, which are described in more detail and are not to be construed as limiting the scope of the present application. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the application, which are all within the scope of the application. Accordingly, the scope of the application should be assessed as that of the appended claims.
Claims (10)
1. Drying device is used in nanometer zinc oxide preparation, characterized by, include:
a cylinder body, wherein materials enter from the top of the cylinder body and are discharged from the bottom;
the hot dryer is used for drying the materials in the cylinder;
a first material guiding disc and a second material guiding disc are sequentially connected in the cylinder body from top to bottom along the axis of the cylinder body, the diameter of the second material guiding disc is larger than that of the first material guiding disc, and a material guiding ring groove is formed in the center of the second material guiding disc;
the center of the cylinder body is rotationally connected with a rotating shaft, the rotating shaft penetrates through the centers of the first guide tray and the second guide tray and is rotationally connected with the first guide tray and the second guide tray, a stirring assembly is arranged at intervals in the circumferential direction of the rotating shaft and comprises a first stirring rod, a second stirring plate, a second stirring rod and a plurality of first stirring plates, the first stirring rod and the second stirring rod are circumferentially arranged on the rotating shaft at intervals, and a sieving groove is formed in the lower portion of the second stirring plate;
the plurality of first material stirring plates are obliquely arranged on the first material stirring rod at intervals along the axis of the first material stirring rod, and the first material stirring plates are configured to stir the materials on the first material guiding plate for a first preset distance in a direction away from the center of the first material guiding plate when the first material stirring plates are in rotary contact with the first material guiding plate; the second material stirring plate is obliquely arranged on the second material stirring rod along the axis of the second material stirring rod in the direction opposite to the first material stirring plate, and the second material stirring plate is configured to stir the material with the grain diameter larger than the groove width of the screening groove on the first material guiding plate for a second preset distance in the direction approaching to the center of the first material guiding plate when the second material stirring plate is in rotary contact with the first material guiding plate; the first preset distance is greater than the second preset distance.
2. The drying device for preparing nano zinc oxide according to claim 1, wherein the first material stirring plates are further configured such that when the first material stirring plates are in rotational contact with the second material guiding disc, each first material stirring plate can stir the material on the second material guiding disc to a first preset distance in a direction close to the center of the second material guiding disc, the first material stirring plates can stir the material into the material guiding ring groove under the combined action of the first material stirring plates, and the second material stirring plates are further configured such that when the second material stirring plates are in rotational contact with the second material guiding disc, the material with a grain size larger than the grain size of the sieve groove on the second material guiding disc can stir a second preset distance in a direction away from the center of the second material guiding disc, and the first preset distance is larger than the second preset distance.
3. The drying device for preparing nano zinc oxide according to claim 2, wherein the plurality of second stirring plates are arranged in each stirring assembly, and the plurality of second stirring plates are inclined and spaced along the axis of the second stirring rod in the opposite direction to the first stirring plates.
4. The drying device for preparing nano zinc oxide according to claim 1, wherein the width of the sieving groove is adjustable.
5. The drying device for preparing nano zinc oxide according to claim 4, wherein the first guide tray and the second guide tray are elastically connected in the cylinder and can slide along the axis of the cylinder, the second deflector comprises a plate frame, a first toothed plate, a second toothed plate, a tension spring and a guide unit, the plate frame is fixedly arranged on the second deflector rod, the first toothed plate is elastically connected below the plate frame and can slide along the axis of the rotating shaft, one side of the plate frame is connected with the tension spring, one end of the tension spring, which is far away from the plate frame, is connected with the second toothed plate, the guide unit is arranged between the first toothed plate and the second toothed plate, when the first toothed plate moves downwards along the axis of the rotating shaft, the second toothed plate can move along the length direction of the plate frame under the action of the tension spring and simultaneously moves towards the direction close to the bottom of the cylinder under the action of the guide unit, so that the groove width of the sieve groove is increased.
6. The drying device for preparing nano zinc oxide according to claim 5, wherein the guiding unit comprises a first inclined block and a second inclined block, the first inclined block is arranged on the first toothed plate, and the second inclined block is arranged on the second toothed plate.
7. The drying device for preparing nano zinc oxide according to claim 5, wherein a distance sensor is disposed in the cylinder, and the distance sensor is capable of transmitting an electric signal to the thermal dryer after the first and second guide trays slide downward by a preset distance, so that the power of the thermal dryer is increased.
8. The drying device for preparing nano zinc oxide according to claim 1, wherein an auger conveyor is arranged at the top of the cylinder, a feed hopper is arranged on one side of the upper part of the auger conveyor, a material guide pipe is arranged on the other side of the lower part of the auger conveyor, and one end, far away from the auger conveyor, of the material guide pipe is communicated with the cylinder.
9. The drying device for preparing nano zinc oxide according to claim 1, wherein a discharging pipe is arranged at the bottom of the cylinder.
10. The drying device for preparing nano zinc oxide according to claim 1, wherein the side wall of the cylinder is further provided with a first observation port and a second observation port.
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| CN116481287A (en) * | 2023-06-25 | 2023-07-25 | 德州斯诺威机械有限公司 | Online drying device of pellet feed processing |
| CN116518684A (en) * | 2023-07-05 | 2023-08-01 | 东营市赫邦化工有限公司 | Improved hydroxylamine hydrochloride drying system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4397103A (en) * | 1981-07-27 | 1983-08-09 | American Artos Corporation | Textile fabric dryer with rotary damper arrangement |
| JP2001314745A (en) * | 2000-03-03 | 2001-11-13 | Shikoku Res Inst Inc | Powder heater |
| CN108325847A (en) * | 2018-01-25 | 2018-07-27 | 朱兆明 | Centrifuge negative pressure grain screening agricultural apparatus and method |
| CN111054631A (en) * | 2019-12-11 | 2020-04-24 | 济南工程职业技术学院 | River sand screening plant for building |
| CN215766051U (en) * | 2021-08-20 | 2022-02-08 | 常州市智立方网络科技有限公司 | Drying equipment model with controllable particle size |
| CN116481287A (en) * | 2023-06-25 | 2023-07-25 | 德州斯诺威机械有限公司 | Online drying device of pellet feed processing |
| CN116518684A (en) * | 2023-07-05 | 2023-08-01 | 东营市赫邦化工有限公司 | Improved hydroxylamine hydrochloride drying system |
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