CN107261986B - Vertical discharging device of fluidized bed - Google Patents
Vertical discharging device of fluidized bed Download PDFInfo
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- CN107261986B CN107261986B CN201710631093.1A CN201710631093A CN107261986B CN 107261986 B CN107261986 B CN 107261986B CN 201710631093 A CN201710631093 A CN 201710631093A CN 107261986 B CN107261986 B CN 107261986B
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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
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/16—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic by suspending the powder material in a gas, e.g. in fluidised beds or as a falling curtain
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Abstract
The invention discloses a vertical discharging device of a fluidized bed, which comprises a fluidized bin for materials, an air inlet cavity and a discharging hole of the fluidized bed; an air distribution plate compression ring and an air distribution plate are arranged in the fluidization bin, a sealing groove is arranged between the periphery of the air distribution plate compression ring and the inner wall of the fluidization bin, and an inflatable sealing ring is arranged in the sealing groove; the radial two sides of the air distribution plate are provided with supporting rings, the radial two sides of the supporting rings are respectively provided with rotating arms connected with the supporting rings, and the end part of one rotating arm is connected with the distribution plate rotary driving device; screw holes are formed in the air distribution plate and the supporting ring, screws are arranged in the screw holes in a penetrating mode and are fastened through nuts, the upper ends of the screws are fixedly connected with the bottom of the air distribution plate pressing ring, the air distribution plate and the supporting ring are integrated, and vertical discharging is achieved through rotating the air distribution plate. The material is discharged by adopting the turnover air distribution plate, and the material is discharged vertically downwards under the action of gravity when the turnover air distribution plate is turned; the discharging speed is high, the discharging is clean, and the production efficiency is improved.
Description
Technical Field
The invention belongs to the field of solid preparations, relates to a vertical discharging device, and particularly relates to a fluidized bed vertical discharging device.
Background
The fluidized bed is used to dry the material, and the powder, paste and other flowable material are set on air distributing board, such as porous board, and the drying medium with relatively high speed is fed from the lower part. When the flow speed of the medium is low, gas flows through the material particles, and the whole material layer is motionless; gradually increasing the air flow speed, starting to expand the material layer, and increasing the inter-particle gaps; increasing the gas flow rate, a considerable part of the materials are in a suspension state, so that a gas-solid mixed bed, namely a fluidized bed, is formed, and the suspended materials in the fluidized bed are like boiling liquid, so that the fluidized bed is also called as a boiling bed and has fluid properties in many aspects, such as obvious upper interface and is kept level; if the flow rate of the gas flow is increased again, almost all particles are carried away by the gas flow, and the gas becomes gas delivery. The gas flow rate is thus the most fundamental control factor for fluidized bed drying, and it is appropriate that the gas flow rate is between the onset of fluidization of the bed and the entrainment of the material.
The fluidized bed granulation method is a method of maintaining a fluidized state of a drug powder in suspension by a bottom-up gas flow, and spraying a binder liquid into a fluidization chamber from above or below to agglomerate the powder into particles.
Fluid bed granulation, also known as ebullated granulation or one-step granulation, is a technique in which materials are fed into a closed container at one time, the materials are uniformly mixed in the container, then an adhesive is uniformly sprayed through equipment to fully mix the adhesive with the materials, the materials flow in the container to form small particles, hot air is fed through the bottom end of the container to dry the wet particles, and finally the finished dry particles are directly collected
Air is generally used as fluidizing gas, preheated and then introduced into the bottom of a fluidized bed with a distribution plate, so that solid powder to be granulated is in a fluidized state. The majority of the liquid feed is injected into the fluidised bed by means of two-fluid nozzles, which are required to be operationally flexible and not prone to clogging, and in the case of hot gases, more attention is paid to the atomisation of the crystallised liquid. In order to make the liquid coated on the particles as dry as possible, countercurrent flow of gas and solid particles is generally used in order to make the particle size distribution of the product more uniform. The velocity of the fluidizing gas is so high that the large particles move strongly to prevent agglomeration.
A large amount of solid particles are suspended in a moving fluid, so that the particles have certain apparent characteristics of the fluid, when air passes through a material layer in a state that the solid particles are randomly filled from bottom to top, and the air flow speed reaches or exceeds the critical fluidization speed of the particles, the particles in the material layer are turned up and down, and part of the particles are carried out of the material layer by the air flow, and the state that the solid particles are in contact with the fluid is called solid fluidization, namely a fluidized bed.
At present, a lateral discharging structure is mainly adopted for a solid preparation fluidized bed, however, long-term production practice shows that the lateral discharging structure has the technical problems of long discharging time, incomplete discharging or difficult cleaning discharging and the like, and the technical problems need to be solved.
Disclosure of Invention
The invention aims to overcome the defects or shortcomings of the prior art, and provides a vertical discharging device of a fluidized bed, wherein a turnover air distribution plate is adopted to realize discharging, and when the air distribution plate is turned over, materials naturally vertically and downwards discharge due to the action of gravity and enter the next procedure; has the characteristics of high discharging speed, clean discharging and the like, and effectively improves the production efficiency.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the vertical discharging device of the fluidized bed is characterized by comprising a fluidized bin for materials, an air inlet cavity and a discharging hole of the fluidized bed from top to bottom in sequence;
an air distribution plate compression ring and an air distribution plate are sequentially arranged in the fluidization bin from top to bottom, a sealing groove is arranged between the periphery of the air distribution plate compression ring and the inner wall of the fluidization bin, and an inflatable sealing ring is arranged in the sealing groove;
the radial two sides of the air distribution plate are provided with support rings, the radial two sides of the support rings are respectively provided with a rotating arm connected with the support rings, and the end part of one rotating arm is connected with a distribution plate rotary driving device positioned outside the fluidization bin in a positioning way;
the air distribution plate and the supporting ring are respectively provided with a screw hole which is concentric up and down, a screw is penetrated in the screw hole and is fastened by a nut arranged at the bottom of the screw hole of the supporting ring, the upper end of the screw is fixedly connected with the bottom of the air distribution plate compression ring, so that the air distribution plate compression ring, the air distribution plate and the supporting ring are connected into a whole;
the first air cylinder and the second air cylinder are symmetrically arranged on the two radial sides of the fluidization bin, and the air cylinder shafts of the first air cylinder and the second air cylinder horizontally penetrate through the bottom of the air distribution plate from the outer wall of the fluidization bin; and a first cylinder sealing ring and a second cylinder sealing ring are respectively arranged between the inner wall of the fluidization bin and the cylinder shafts of the first cylinder and the second cylinder.
And driving the air distribution plate to rotate 90 degrees by using the distribution plate rotation driving device so as to realize vertical discharging of the fluidized bed.
The vertical discharging device of the fluidized bed, wherein,
a first guide ring sleeved on the rotating arm is arranged between the fluidization bin and the rotating arm of the supporting ring; a first rotary shaft seal is arranged between the rotating arm and the inner surface of the fluidization bin in a sealing way;
a second guide ring sleeved on the rotating arm is arranged between the fluidization bin and the rotating arm of the supporting ring; and a second rotary shaft seal is arranged between the rotating arm and the inner surface of the fluidization bin in a sealing way.
The end face of the air distribution plate compression ring is of an inclined plane structure capable of avoiding accumulation.
The inclination angle of the end face of the air distribution plate compression ring is 30-60 degrees.
Compared with the prior art, the invention has the following advantages:
the vertical discharging device of the fluidized bed realizes discharging by adopting the turnover air distribution plate, and simultaneously, the materials are naturally and vertically discharged downwards under the action of gravity and enter the next working procedure when the turnover air distribution plate is turned. Therefore, the discharging device has the advantages of high discharging speed, clean discharging, high production efficiency and the like.
Drawings
FIG. 1 is a schematic diagram showing the state structure of a distribution plate during normal operation and feeding of a fluidized bed according to the present invention;
FIG. 2 is a schematic top view of FIG. 1;
FIG. 3 is a schematic view of the structure rotated 90 counterclockwise after being sectioned along the line W-W in FIG. 2;
FIG. 4 is a schematic diagram showing the structure of the fluidized bed air distribution plate of the vertical fluidized bed discharging device in a state when the fluidized bed air distribution plate is turned over for 90 degrees and materials fall down for discharging;
fig. 5 is an enlarged schematic view of the portion a in fig. 1.
Detailed Description
The invention will be further described with reference to the accompanying drawings.
Referring to fig. 1, and referring to fig. 2-5, there is shown a vertical discharging device for a fluidized bed according to the present invention, which adopts the following key technical scheme:
a vertical discharging device of a fluidized bed sequentially comprises a fluidized bin 16 for materials, an air inlet cavity 18 and a discharging hole 17 of the fluidized bed from top to bottom.
The fluidization bin 16 is internally provided with an air distribution plate compression ring 2 and an air distribution plate 3 from top to bottom in sequence, a sealing groove 19 is arranged between the periphery of the air distribution plate compression ring 2 and the inner wall of the fluidization bin 16, and an inflatable sealing ring 1 is arranged in the sealing groove 19.
The radial two sides of the air distribution plate 3 are provided with support rings 4, the radial two sides of the support rings 4 are respectively provided with rotating arms 4A and 4B connected with the support rings 4, and the end part of one rotating arm 4B is positioned and connected with a distribution plate rotary driving device 10 positioned outside the fluidization bin 16.
The air distribution plate 3 and the support ring 4 are respectively provided with a screw hole which is concentric up and down, a screw 15 is arranged in the screw hole in a penetrating way and is fastened by a nut 7 arranged at the bottom of the screw hole of the support ring 4, the upper end of the screw 15 is fixedly connected with the bottom of the air distribution plate compression ring 2, so that the air distribution plate compression ring 2, the air distribution plate 3 and the support ring 4 are connected into a whole.
The first air cylinder 11 and the second air cylinder 13 are symmetrically arranged on the two radial sides of the fluidization bin 16, and the air cylinder shafts 11a and 13a of the first air cylinder 11 and the second air cylinder 13 horizontally penetrate through the bottom of the air distribution plate 3 from the outer wall of the fluidization bin 16; a first cylinder sealing ring 12 and a second cylinder sealing ring 14 are respectively arranged between the inner wall of the fluidization bin 16 and the cylinder shafts 11a and 13a of the first cylinder 11 and the second cylinder 13.
The vertical discharging of the fluidized bed is realized by driving the air distribution plate 3 to rotate 90 degrees by using the distribution plate rotation driving device 10.
A first guide ring 5 sleeved on the rotating arm 4A is arranged between the fluidization bin 16 and the rotating arm 4A of the supporting ring 4; a first rotary shaft seal 6 is arranged between the rotary arm 4A and the inner surface of the fluidization bin 16 in a sealing manner; a second guide ring 9 sleeved on the rotating arm 4B is arranged between the fluidization bin 16 and the rotating arm 4B of the supporting ring 4; a second rotary shaft seal 8 is arranged between the rotary arm 4B and the inner surface of the fluidization bin in a sealing manner.
The end face of the air distribution plate compression ring 2 adopts an inclined plane structure so as to avoid accumulation. The inclination angle of the end face of the air distribution plate compression ring 2 is 30-60 degrees. In this embodiment, the end face of the air distribution plate pressing ring 2 is inclined at 45 degrees.
The following further describes the overall structure and the working principle of the vertical discharging device of the fluidized bed:
as shown in fig. 1-5, the vertical discharging device of the fluidized bed mainly comprises a sealing ring 1, an air distribution plate compression ring 2, an air distribution plate 3, a rotating arm supporting ring 4, a first guide ring 5, a first rotary shaft seal 6, a fixing nut 7, a second rotary shaft seal 8, a second guide ring 9, a distribution plate rotary driving device 10, a first air cylinder 11, a first air cylinder seal 12, a second air cylinder 13, a second air cylinder seal 14 and other components.
As shown in fig. 1, the inflatable sealing ring 1 is embedded in an inflatable sealing groove 19 of the device for sealing between the fluidized bed device and the air distribution plate compression ring 2.
As shown in fig. 1, 3 and 5, the end face of the air distribution plate compression ring 2 adopts an inclined plane structure, so that accumulation can be avoided, and the inclination angle of the end face of the air distribution plate compression ring 2 is generally within the range of 30-60 degrees. The screw rod 15 is welded at the lower end of the air distribution plate compression ring 2, the screw rod 15 penetrates through screw holes of the air distribution plate 3 and the rotating arm support ring 4, and the screw rod 15 is screwed and fixed by the nut 7, so that the components are fixed together to form a whole. The vertical discharge is achieved by rotating an air distribution plate 3, which air distribution plate 3 serves to redistribute the gas flow of the fluidized bed.
The support ring 4 is used for supporting the air distribution plate 3, and prevents the air distribution plate 3 from being deformed or even crushed by material pressure. Simultaneously, the supporting ring 4 extends out of the two rotating arms 4A to drive the air distribution plate 3 to rotate.
A first guide ring 5 is placed between the fluidized bed apparatus and one side rotating arm 4A of the support ring 4 for protecting the rotating arm; the first rotary shaft seal 6 is used for sealing the swivel arm 4A to the inner surface of the apparatus.
A second guide ring 9 is arranged between the fluidized bed equipment and the rotating arm 4B at the other side of the support ring 4 and is used for protecting the rotating arm; the second rotary shaft seal 8 is used for sealing the other side swivel arm 4B to the inner surface of the apparatus.
The other side end of the rotary arm 4B of the support ring 4 is connected with a distributing plate rotary driving device 10, and the distributing plate rotary driving device 10 is used for driving the air distributing plate 3 to rotate.
The first cylinder 11 and the second cylinder 13 are used for preventing the fluidized bed from rotating the air distribution plate 3 in motion, and have interlocking protection effect on equipment. First cylinder seal 12 and second cylinder seal 14 are used for sealing between first cylinder 11 and second cylinder 13, respectively, and the inner surface of the apparatus.
The working process of the vertical discharging device of the whole fluidized bed is described below with reference to the accompanying drawings:
as shown in fig. 1, when the fluidized bed is in normal use, the cylinder shafts of the first cylinder 11 and the second cylinder 13 extend into the fluidization chamber 16, preventing the air distribution plate 3 from rotating. The inflatable sealing ring 1 is inflated and swelled to be extruded and deformed with the air distribution plate compression ring 2, so that a seal is formed. The material 20 may then be dried or granulated normally in a fluid bed. The material 20 to be dried or granulated enters the fluidization bin 16 in the direction of the feed J indicated by the arrow at the top of the fluidized bed, and when the drying or granulating is completed and the discharging is required, the cylinder shafts 11a, 13a of the first and second cylinders 11, 13 retract into the corresponding cylinders, and the air distribution plate 3 can freely rotate. The inflatable sealing ring 1 is deflated, so that the air distribution plate compression ring 2 is separated from the equipment. The distributor plate rotary drive 10 drives the air distributor plate 3 to rotate to the position shown in fig. 4, at which time the dried or granulated material falls naturally and vertically by gravity from the discharge opening 17 in the lower part of the fluidized bed in the direction indicated by the arrow C in the figure.
The above embodiments are provided for illustrating the present invention and not for limiting the present invention, and various changes and modifications may be made by one skilled in the relevant art without departing from the spirit and scope of the present invention, and thus all equivalent technical solutions should be defined by the claims.
Claims (4)
1. The vertical discharging device of the fluidized bed is characterized by comprising a fluidized bin for materials, an air inlet cavity and a discharging hole of the fluidized bed from top to bottom in sequence;
an air distribution plate compression ring and an air distribution plate are sequentially arranged in the fluidization bin from top to bottom, a sealing groove is arranged between the periphery of the air distribution plate compression ring and the inner wall of the fluidization bin, and an inflatable sealing ring is arranged in the sealing groove;
the radial two sides of the air distribution plate are provided with support rings, the radial two sides of the support rings are respectively provided with a rotating arm connected with the support rings, and the end part of one rotating arm is connected with a distribution plate rotary driving device positioned outside the fluidization bin in a positioning way;
the air distribution plate and the supporting ring are respectively provided with a screw hole which is concentric up and down, a screw is penetrated in the screw hole and is fastened by a nut arranged at the bottom of the screw hole of the supporting ring, the upper end of the screw is fixedly connected with the bottom of the air distribution plate compression ring, so that the air distribution plate compression ring, the air distribution plate and the supporting ring are connected into a whole;
the first air cylinder and the second air cylinder are symmetrically arranged on the two radial sides of the fluidization bin, and the air cylinder shafts of the first air cylinder and the second air cylinder horizontally penetrate through the bottom of the air distribution plate from the outer wall of the fluidization bin; a first cylinder sealing ring and a second cylinder sealing ring are respectively arranged between the inner wall of the fluidization bin and the cylinder shafts of the first cylinder and the second cylinder;
and driving the air distribution plate to rotate 90 degrees by using the distribution plate rotation driving device so as to realize vertical discharging of the fluidized bed.
2. The vertical discharging device of the fluidized bed according to claim 1, wherein a first guide ring sleeved on the rotating arm is arranged between the fluidization bin and the rotating arm of the supporting ring; a first rotary shaft seal is arranged between the rotating arm and the inner surface of the fluidization bin in a sealing way;
a second guide ring sleeved on the rotating arm is arranged between the fluidization bin and the rotating arm of the supporting ring; and a second rotary shaft seal is arranged between the rotating arm and the inner surface of the fluidization bin in a sealing way.
3. The vertical discharging device of fluidized bed according to claim 1 or 2, wherein the end face of the air distribution plate compression ring has an inclined surface structure capable of avoiding accumulation.
4. A vertical fluidized bed discharging device according to claim 3, wherein the inclination angle of the end face of the air distribution plate pressing ring is 30-60 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710631093.1A CN107261986B (en) | 2017-07-28 | 2017-07-28 | Vertical discharging device of fluidized bed |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710631093.1A CN107261986B (en) | 2017-07-28 | 2017-07-28 | Vertical discharging device of fluidized bed |
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| CN107261986A CN107261986A (en) | 2017-10-20 |
| CN107261986B true CN107261986B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201710631093.1A Active CN107261986B (en) | 2017-07-28 | 2017-07-28 | Vertical discharging device of fluidized bed |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107671300A (en) * | 2017-10-26 | 2018-02-09 | 河北工业职业技术学院 | Fluidize fast quenching equipment |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858529A (en) * | 2005-05-08 | 2006-11-08 | 山东理工大学 | External air flow distribution pulsation fluidizing drying device |
| CN203609668U (en) * | 2013-12-16 | 2014-05-28 | 永信药品工业(昆山)有限公司 | Improved structure for fluidized bed bottom-spraying device |
| CN207012937U (en) * | 2017-07-28 | 2018-02-16 | 上海涵欧制药设备有限公司 | A kind of fluid bed vertical discharging apparatus |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6684917B2 (en) * | 2001-12-17 | 2004-02-03 | The University Of Western Ontario | Apparatus for volumetric metering of small quantity of powder from fluidized beds |
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2017
- 2017-07-28 CN CN201710631093.1A patent/CN107261986B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1858529A (en) * | 2005-05-08 | 2006-11-08 | 山东理工大学 | External air flow distribution pulsation fluidizing drying device |
| CN203609668U (en) * | 2013-12-16 | 2014-05-28 | 永信药品工业(昆山)有限公司 | Improved structure for fluidized bed bottom-spraying device |
| CN207012937U (en) * | 2017-07-28 | 2018-02-16 | 上海涵欧制药设备有限公司 | A kind of fluid bed vertical discharging apparatus |
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| CN107261986A (en) | 2017-10-20 |
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