CN114887339A - Spray drier - Google Patents
Spray drier Download PDFInfo
- Publication number
- CN114887339A CN114887339A CN202210459596.6A CN202210459596A CN114887339A CN 114887339 A CN114887339 A CN 114887339A CN 202210459596 A CN202210459596 A CN 202210459596A CN 114887339 A CN114887339 A CN 114887339A
- Authority
- CN
- China
- Prior art keywords
- drying tower
- air
- hot air
- rotary
- cold air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000007921 spray Substances 0.000 title claims abstract description 25
- 238000001035 drying Methods 0.000 claims abstract description 48
- 238000000889 atomisation Methods 0.000 claims abstract 4
- 230000007704 transition Effects 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 7
- 239000008187 granular material Substances 0.000 abstract description 3
- 230000000149 penetrating effect Effects 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000001816 cooling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/16—Evaporating by spraying
- B01D1/18—Evaporating by spraying to obtain dry solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/0082—Regulation; Control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/14—Evaporating with heated gases or vapours or liquids in contact with the liquid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D1/00—Evaporating
- B01D1/30—Accessories for evaporators ; Constructional details thereof
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to a spray dryer, which comprises a drying tower, wherein the top of the drying tower is provided with a conical hole, the top end of the drying tower is provided with a hot air distributor, the hot air distributor comprises a conical seat positioned on the inner side of the conical hole, an atomization component is arranged in the middle of the conical seat in a penetrating manner, the atomization component comprises a cylinder, the lower port of the cylinder is provided with an atomizer, the outer side of the cylinder is sleeved with an air guide jacket, the side wall of the top of the cylinder is provided with a cold air inlet communicated with the inner cavity of the air guide jacket, the bottom of the air guide jacket is provided with an annular cold air outlet, and a spiral guide plate is arranged in the air guide jacket; the phenomenon that the top is returned to fog drops is difficult to appear in this novel spray dryer's the drying tower, consequently can not bond on the inboard top surface of drying tower and have material granule.
Description
Technical Field
The invention relates to the technical field of drying equipment, in particular to a spray dryer.
Background
A common spray dryer on the market comprises a drying tower, wherein a hot air distributor is arranged at the top end of the drying tower, hot air forms rotary hot air under the action of the hot air distributor and enters the drying tower, an atomizer is arranged at the top of an inner cavity of the drying tower and converts feed liquid into ultrafine fog drops, and the fog drops are contacted with the rotary hot air and dried into material particles in an extremely short time;
the spray dryer commonly used in the market has the following problems: the phenomenon that fog drops return to the top is easy to occur in the drying tower, after the fog drops returning to the top are dried, material particles bonded on the top surface of the inner side of the drying tower are formed, the material particles are heated for a long time and are coked and deteriorated, and the product quality is seriously influenced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a spray dryer, wherein the phenomenon that fog drops return to the top is not easy to occur in a drying tower of the spray dryer, so that material particles cannot be adhered to the top surface of the inner side of the drying tower.
In order to solve the technical problems, the spray dryer provided by the invention comprises a drying tower, wherein a tapered hole is formed in the top of the drying tower, a hot air distributor is arranged at the top end of the drying tower and comprises a tapered seat positioned on the inner side of the tapered hole, an atomizing assembly is arranged in the middle of the tapered seat in a penetrating manner and comprises a cylinder, an atomizer is arranged on a lower port of the cylinder, an air guide jacket is sleeved outside the cylinder, a cold air inlet communicated with an inner cavity of the air guide jacket is formed in the side wall of the top of the cylinder, an annular cold air outlet is formed in the bottom of the air guide jacket, and a spiral guide plate is arranged in the air guide jacket;
the hot air forms rotary hot air under the action of the hot air distributor and enters the drying tower, the cold air forms rotary cold air under the action of the spiral guide plate and enters the drying tower from the cold air outlet, the rotary directions of the rotary cold air and the rotary hot air are opposite, the rotary cold air and the rotary hot air are mixed and generate local turbulence, and therefore an isolating layer for preventing fog drops from returning to the top is formed.
Further, the cold air inlet is sequentially connected with the filter and the air blower through a pipeline; the air blower conveys air to the filter for filtration through a pipeline, and clean air enters the inner cavity of the air guide jacket from the cold air inlet.
Furthermore, a fillet is arranged on the lower port of the conical hole; the fillet is arranged, so that wind pressure eddy current can be effectively reduced, negative pressure is prevented from being generated at the top of the inner cavity of the drying tower, and therefore the fogdrop returning caused by the negative pressure is avoided.
Furthermore, an annular hot air channel is formed between the conical hole and the conical seat, and an air equalizing net is arranged at the lower port of the hot air channel; and rotary hot air enters the drying tower from the hot air channel, and the air equalizing net can ensure uniform distribution of the hot air.
Further, the top surface of the inner side of the drying tower is in arc transition with the inner side surface of the drying tower; the arc transition can prevent negative pressure from being generated around the top of the inner cavity of the drying tower, so that the fog drops caused by the negative pressure are prevented from returning to the top.
Furthermore, the cylinder body and the air guide jacket are respectively conical; so that the wind speed at the cold wind outlet is faster and the rotary cold wind formed in the drying tower is stronger.
The invention has the beneficial effects that: hot air forms rotary hot air under the action of the hot air distributor and enters the drying tower, cold air forms rotary cold air under the action of the spiral guide plate and enters the drying tower from the cold air outlet, the rotary directions of the rotary cold air and the rotary hot air are opposite, the rotary cold air and the rotary hot air are mixed and generate local turbulence, and therefore an isolating layer for preventing fog drops from returning to the top is formed; the air guide jacket also has the function of continuously cooling the atomizer, so that the atomizer is prevented from being overheated to generate faults; the phenomenon that the top is returned to fog drops is difficult to appear in this novel spray dryer's the drying tower, consequently can not bond on the inboard top surface of drying tower and have material granule.
Drawings
In order to clearly illustrate the innovative principles of the invention and its advantages compared to existing spray dryers, a possible embodiment is illustrated below by way of non-limiting example applying said principles, with the aid of the accompanying drawings. In the figure:
FIG. 1 is a schematic view of a spray dryer of the present invention;
fig. 2 is a schematic view of the spray dryer of fig. 1.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without any inventive step, are within the scope of the present invention.
It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the present embodiment are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless expressly stated or limited otherwise, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific circumstances.
Example 1
As shown in fig. 1-2, the spray dryer of this embodiment includes a drying tower 1, a tapered hole 11 is formed in the top of the drying tower 1, a hot air distributor is disposed at the top end of the drying tower 1, the hot air distributor includes a tapered seat 2 located inside the tapered hole 11, an annular hot air channel 12 is formed between the tapered hole 11 and the tapered seat 2, an atomizing assembly is inserted into the middle of the tapered seat 2, the atomizing assembly includes a cylinder 3, an atomizer 4 is disposed on a lower port of the cylinder 3, an air guide jacket 5 is sleeved outside the cylinder 3, a cold air inlet 6 communicated with an inner cavity of the air guide jacket 5 is formed in a sidewall of the top of the cylinder 3, an annular cold air outlet 7 is formed in the bottom of the air guide jacket 5, and a spiral guide plate 8 is disposed in the air guide jacket 5;
the hot air forms rotary hot air under the action of the hot air distributor and enters the drying tower 1 from the hot air channel 12, the cold air forms rotary cold air under the action of the spiral guide plate 8 and enters the drying tower 1 from the cold air outlet 7, the rotary directions of the rotary cold air and the rotary hot air are opposite, the rotary cold air and the rotary hot air are mixed and generate local turbulence, and therefore an isolation layer C for preventing fog drops from returning to the top is formed.
If the spray dryer adopts a nitrogen closed circulation system, introducing nitrogen into the cold air inlet 6; if the spray is aseptic spray, the cold air inlet 6 is filled with aseptic air; different gases are selected according to actual conditions.
Preferably, the cold air inlet 6 is connected with a filter 9 and a blower 10 in sequence through pipelines; the air blower conveys air to the filter for filtration through a pipeline, and clean air enters the inner cavity of the air guide jacket from the cold air inlet.
A fillet is arranged on the lower port of the conical hole 11; the fillet is arranged, so that wind pressure eddy current can be effectively reduced, negative pressure is prevented from being generated at the top of the inner cavity of the drying tower, and therefore the fogdrop returning caused by the negative pressure is avoided.
An air equalizing net is arranged on the lower port of the hot air channel 12; the air equalizing net can ensure even distribution of hot air.
The top surface of the inner side of the drying tower 1 and the inner side surface thereof are in arc transition; the arc transition can prevent negative pressure from being generated around the top of the inner cavity of the drying tower, so that the fog drops caused by the negative pressure are prevented from returning to the top.
Preferably, the cylinder 3 and the wind guiding jacket 5 are respectively conical, and the cylinder 3 and the wind guiding jacket 5 can also be cylindrical.
Hot air forms rotary hot air under the action of the hot air distributor and enters the drying tower 1, cold air forms rotary cold air under the action of the spiral guide plate 8 and enters the drying tower 1 from the cold air outlet 7, the rotary cold air and the rotary hot air rotate in opposite directions, the rotary cold air and the rotary hot air are mixed and generate local turbulence, and therefore an isolation layer C for preventing fog drops from returning to the top is formed; the air guide jacket 5 also has the function of continuously cooling the atomizer 4, so that the atomizer 4 is prevented from being overheated to generate faults; the spray dryer of this embodiment is difficult for appearing the droplet in the drying tower and returning the top phenomenon, consequently can not adhere to the material granule on the inboard top surface of drying tower.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (6)
1. The utility model provides a spray dryer, includes drying tower (1), bell mouth (11) have been seted up at the top of drying tower (1), the top of drying tower (1) is equipped with hot air distributor, hot air distributor is including being located bell mouth (11) inboard toper seat (2), its characterized in that: an atomization component penetrates through the middle of the conical seat (2), the atomization component comprises a cylinder body (3), an atomizer (4) is arranged on a lower port of the cylinder body (3), an air guide jacket (5) is sleeved on the outer side of the cylinder body (3), a cold air inlet (6) communicated with an inner cavity of the air guide jacket (5) is formed in the side wall of the top of the cylinder body (3), an annular cold air outlet (7) is formed in the bottom of the air guide jacket (5), and a spiral guide plate (8) is arranged in the air guide jacket (5);
the hot air forms rotary hot air under the action of the hot air distributor to enter the drying tower (1), the cold air forms rotary cold air under the action of the spiral guide plate (8) to enter the drying tower (1) from the cold air outlet (7), the rotary directions of the rotary cold air and the rotary hot air are opposite, the rotary cold air and the rotary hot air are mixed to generate local turbulence, and therefore an isolation layer (C) for preventing fog drops from returning to the top is formed.
2. A spray dryer according to claim 1, wherein: the cold air inlet (6) is sequentially connected with the filter (9) and the air blower (10) through pipelines.
3. A spray dryer according to claim 1, wherein: and a fillet is arranged on the lower port of the conical hole (11).
4. A spray dryer according to claim 1, wherein: an annular hot air channel (12) is formed between the conical hole (11) and the conical seat (2), and an air equalizing net is arranged on the lower port of the hot air channel (12).
5. A spray dryer according to claim 1, wherein: the top surface of the inner side of the drying tower (1) is in arc transition with the inner side surface of the drying tower.
6. A spray dryer according to claim 1, wherein: the cylinder (3) and the air guide jacket (5) are respectively conical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210459596.6A CN114887339A (en) | 2022-04-27 | 2022-04-27 | Spray drier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210459596.6A CN114887339A (en) | 2022-04-27 | 2022-04-27 | Spray drier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114887339A true CN114887339A (en) | 2022-08-12 |
Family
ID=82720313
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210459596.6A Pending CN114887339A (en) | 2022-04-27 | 2022-04-27 | Spray drier |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114887339A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994007608A1 (en) * | 1992-09-30 | 1994-04-14 | Barr & Murphy (Canada) Ltd. | Improved rotary disk atomizer |
| CN2328958Y (en) * | 1998-06-05 | 1999-07-14 | 武进市范群干燥设备厂 | Centrafugal spray drying tower |
| CN2442213Y (en) * | 2000-09-19 | 2001-08-08 | 山东省科学院能源研究所 | Hot air distributor of centrifugal spray dry tower |
| US20090026291A1 (en) * | 2007-07-24 | 2009-01-29 | Nordson Corporation | Spray device for small amount of liquid |
| CN101373093A (en) * | 2008-07-22 | 2009-02-25 | 北京国电恒嘉科贸有限公司 | Intelligent control apparatus of energy-saving atomizer for air conditioner |
| CN202493369U (en) * | 2012-03-20 | 2012-10-17 | 烟台福尔精密机械有限公司 | Novel fuel injector with inverted tapered orifice |
| CN105964187A (en) * | 2016-06-21 | 2016-09-28 | 上海艾魁英生物科技有限公司 | Special water curtain type solidification granulation cylinder device for lysozyme dimer |
| CN106732173A (en) * | 2017-01-11 | 2017-05-31 | 陆文光 | Anti- molten atomizing granulating and drying machine and its method of work |
| CN107875660A (en) * | 2017-12-14 | 2018-04-06 | 无锡市尚德干燥设备有限公司 | Anti-sticking wall-shaped spray dryer |
| CN209706440U (en) * | 2019-01-12 | 2019-11-29 | 无锡市林洲干燥设备有限公司 | A kind of anti-sticking head tower wall cooling device |
| CN217154722U (en) * | 2022-04-27 | 2022-08-09 | 江苏宇通干燥工程有限公司 | Spray drier |
-
2022
- 2022-04-27 CN CN202210459596.6A patent/CN114887339A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994007608A1 (en) * | 1992-09-30 | 1994-04-14 | Barr & Murphy (Canada) Ltd. | Improved rotary disk atomizer |
| CN2328958Y (en) * | 1998-06-05 | 1999-07-14 | 武进市范群干燥设备厂 | Centrafugal spray drying tower |
| CN2442213Y (en) * | 2000-09-19 | 2001-08-08 | 山东省科学院能源研究所 | Hot air distributor of centrifugal spray dry tower |
| US20090026291A1 (en) * | 2007-07-24 | 2009-01-29 | Nordson Corporation | Spray device for small amount of liquid |
| CN101373093A (en) * | 2008-07-22 | 2009-02-25 | 北京国电恒嘉科贸有限公司 | Intelligent control apparatus of energy-saving atomizer for air conditioner |
| CN202493369U (en) * | 2012-03-20 | 2012-10-17 | 烟台福尔精密机械有限公司 | Novel fuel injector with inverted tapered orifice |
| CN105964187A (en) * | 2016-06-21 | 2016-09-28 | 上海艾魁英生物科技有限公司 | Special water curtain type solidification granulation cylinder device for lysozyme dimer |
| CN106732173A (en) * | 2017-01-11 | 2017-05-31 | 陆文光 | Anti- molten atomizing granulating and drying machine and its method of work |
| CN107875660A (en) * | 2017-12-14 | 2018-04-06 | 无锡市尚德干燥设备有限公司 | Anti-sticking wall-shaped spray dryer |
| CN209706440U (en) * | 2019-01-12 | 2019-11-29 | 无锡市林洲干燥设备有限公司 | A kind of anti-sticking head tower wall cooling device |
| CN217154722U (en) * | 2022-04-27 | 2022-08-09 | 江苏宇通干燥工程有限公司 | Spray drier |
Non-Patent Citations (1)
| Title |
|---|
| 阮美娟: "《乳品机械与设备》", 山东科学技术出版社 * |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20220812 |