CN112587946A - Double-rotation drying atomizer spray head - Google Patents
Double-rotation drying atomizer spray head Download PDFInfo
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- CN112587946A CN112587946A CN202011472479.0A CN202011472479A CN112587946A CN 112587946 A CN112587946 A CN 112587946A CN 202011472479 A CN202011472479 A CN 202011472479A CN 112587946 A CN112587946 A CN 112587946A
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- rotating body
- spray head
- pneumatic
- liquid inlet
- inlet section
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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
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- 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 Kinetics & Catalysis (AREA)
- Drying Of Solid Materials (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a spray head of a double-rotation drying atomizer, which relates to the technical field of spray granulation and comprises a liquid inlet section, a hydraulic rotator, a spray head base piece and a pneumatic rotator. The liquid inlet section comprises a liquid inlet, a liquid flow channel and a connecting base plate; the liquid inlet section is connected with the atomizer nozzle base piece through a connecting chassis; the hydraulic rotating body is arranged on the nozzle base piece and corresponds to the position of the liquid flow channel outlet of the liquid inlet section; a plurality of inclined through holes which are uniformly distributed on the circumference are formed in the hydraulic rotating body; nitrogen gas inlets are symmetrically formed in two sides of the nozzle base piece, and each nitrogen gas inlet is correspondingly provided with a pneumatic rotating body; a plurality of inclined through holes which are uniformly distributed on the circumference are formed on the pneumatic rotating body; the inclination directions of the symmetrical inclined through holes on the hydraulic rotating body are opposite to the inclination directions of the symmetrical inclined through holes on the pneumatic rotating body. The structure is compact, the assembly and disassembly are convenient, and the volume is small; high efficiency and economy; the heat conversion efficiency is high; the drying efficiency can be adjusted randomly within a certain range; effectively improving the production environment.
Description
Technical Field
The invention relates to a double-rotation drying atomizer nozzle which can be applied to antioxidant protection granulation drying of easily-oxidized materials, solves the problem of drying of materials containing organic solvents, improves drying efficiency, saves energy, reduces equipment cost, is explosion-proof, and belongs to the technical field of spray granulation.
Background
Spray drying is a process in which a feed solution is dispersed into fine droplets by an atomizer and the solvent is rapidly evaporated in a hot drying medium to form a dry powder product. Spray drying can directly dry the solution, emulsion and suspension into powder, granule, hollow sphere or granule products, and can omit the procedures of evaporation, separation, pulverization and the like, thus becoming a more common drying method in the production of traditional Chinese medicines.
The spray drying granulation is a technological process in which mother liquor or a binder is respectively sent to an atomizing nozzle by pressure making equipment such as a pressure pump and the like, atomized and coated on the surface of fluidized particles or the particles are mutually bonded, and the particles grow gradually through continuous fluidization, coating and drying to reach the required granularity and then are discharged from a discharge port of a fluidized bed. This process is often performed simultaneously with drying.
Spray drying granulation is widely applied to the industries of pharmacy, bioengineering, chemical industry, food and the like. In the industries, the production of powder or granular materials is required, most of the powder materials contain moisture or organic solvents, drying and granulation are often required to be completed synchronously, and a binder is required to be added in the granulation process.
Atomizers are critical components of drying devices or systems. The traditional atomizer takes air as a medium, adopts open-circuit airflow, a fluidized bed or a spray drying technology, has potential safety hazard on the drying of inflammable and explosive materials such as polyacrylonitrile and the like, and has the problems of more discharged entrained particles, high labor intensity, high energy consumption, great tail gas environmental pollution and the like. This drying method is also not suitable for materials containing organic solvents, for the following reasons: firstly, the organic solvent can not be recovered and can only be discharged into the atmosphere to pollute the environment; secondly, the organic solvent is easy to deflagrate in an oxygen-containing environment, and the safety cannot be ensured; thirdly, organic solvent is easy to generate oxidation reaction in high-temperature oxygen-containing environment to generate new oxide which is mixed in the dry powder, thereby influencing the dry purity. In addition, the traditional atomizer generally has no rotating body, and the feed liquid atomization efficiency is not high.
Disclosure of Invention
The invention aims to overcome the defects in the background technology and provides the double-rotation atomizer nozzle, and the technical scheme of the invention has the advantages of compact structure, convenient disassembly, assembly and maintenance and small volume, and can efficiently and accurately solve the problems of byproduct generation due to oxidation, product deterioration in the atomization process and unstable product quality in the atomization granulation process of organic solvent-containing materials in the industries such as pharmacy, bioengineering, chemical industry, food and the like.
The invention is realized by the following technical scheme:
a spray head of a double-rotation drying atomizer comprises a liquid inlet section, a hydraulic rotating body, a spray head base piece and a pneumatic rotating body.
The liquid inlet section comprises a liquid inlet, a connecting base plate and a liquid flow channel;
the liquid inlet section is connected with the atomizer nozzle base piece through the connecting chassis;
preferably, a sealing ring is arranged between the liquid inlet section and the atomizer spray head base piece;
the interior of the spray head base piece is a cavity, and one end of the cavity is connected to the liquid flow channel outlet of the liquid inlet section;
the hydraulic rotating body is arranged on the nozzle base piece and corresponds to the position of the outlet of the liquid inlet channel of the liquid inlet section;
preferably, the hydraulic rotating body is arranged on the spray head base piece through a bearing;
a plurality of inclined through holes which are uniformly distributed in the circumference are formed in the hydraulic rotating body; forming a couple when the atomized feed liquid passes through; the couple drives the hydraulic rotor to rotate at a high speed, and simultaneously, the atomization process of the dry feed liquid is enhanced along with the high-speed rotation of the hydraulic rotor, and atomized liquid drops rotate at a high speed;
nitrogen gas inlets are symmetrically formed in two sides of the nozzle base piece, and each nitrogen gas inlet is correspondingly provided with a pneumatic rotating body;
preferably, a pneumatic swivel bearing is also included;
preferably, the device further comprises a compression ring;
the pneumatic rotating body is arranged on the nozzle base piece through a pneumatic rotating body bearing, and the pressing ring presses the pneumatic rotating body through a connecting screw;
a plurality of inclined through holes which are uniformly distributed on the circumference are formed in the pneumatic rotating body;
the inclined through holes on the hydraulic rotating body are opposite to the inclined through holes on the pneumatic rotating body in inclination direction.
The working principle of the invention is as follows:
after entering from a liquid inlet of a liquid inlet section of a sprayer nozzle of the atomizer, high-pressure drying liquid passes through a liquid flow channel and a plurality of uniformly distributed inclined through holes in an inner cavity of a liquid-operated rotating body to form a liquid-operated couple and drive the liquid-operated rotating body to rotate at a high speed, and simultaneously, the liquid is atomized and finally sprayed out from an atomized liquid flow outlet of symmetrical inclined through holes uniformly distributed on the bottom end surface to enter a drying tower.
High-pressure and high-temperature nitrogen enters an inner cavity of the pneumatic rotating body from an air inlet of the atomizer base piece, the nitrogen passes through a plurality of uniformly distributed inclined through holes to form a pneumatic couple to drive the pneumatic rotating body to rotate at a high speed, and finally the nitrogen is rotationally ejected from an air outlet of the pneumatic rotating body to enter the drying tower;
because the atomized liquid drops and the high-temperature nitrogen rotate at high speed and the directions are opposite, the atomized liquid drops and the high-temperature nitrogen rotate at high speed, the atomized liquid drops are beneficial to the atomization of the feed liquid, the air flow and the atomized liquid flow are beneficial to the full mixing in the drying tower, the atomized liquid drops form a spherical shape due to the surface tension effect, and meanwhile, because the atomized liquid drops have large surface areas, the moisture in the atomized liquid drops is quickly evaporated and dried, and finally the atomized liquid drops.
The invention has the following beneficial effects:
(1) the spray head of the double-rotation drying atomizer has the advantages of compact structure, convenience in disassembly and assembly and small volume;
(2) according to the spray head of the double-rotation drying atomizer, the high-speed rotation of the hydraulic rotating body and the pneumatic rotating body is driven by a couple formed by liquid flow and air flow, so that the spray head is efficient and economical;
(3) according to the double-rotation drying atomizer nozzle, the rotation directions of atomized liquid drops in high-temperature and high-speed nitrogen are opposite, the atomized liquid drops are in full contact with the high-temperature and high-speed nitrogen, and the heat conversion efficiency is high;
(4) according to the spray head of the double-rotation drying atomizer, the rotation speed and the flow of atomized liquid drops and the rotation speed of nitrogen can be adjusted by adjusting the pressure of the air inlet and the pressure of the liquid inlet, so that stepless speed regulation is realized, the granularity of a product can be stepless and adjustable, and the drying efficiency can be adjusted randomly within a certain range;
(5) according to the double-rotation drying atomizer nozzle, nitrogen can be recycled in a closed loop, so that the problems of potential safety hazard, more entrained particles in discharged materials, high labor intensity, high energy consumption, great tail gas environmental pollution and the like existing in the drying of flammable and explosive materials such as polyacrylonitrile and the like can be solved;
(6) the double-rotation drying atomizer nozzle works in a closed state, and can effectively lead oxidizable materials or products and preparation intermediates to obtain antioxidant protection in the drying process through closed circulation of nitrogen or other inert gases.
(7) According to the double-rotation drying atomizer nozzle, nitrogen is used as a heat conduction medium to realize whole-process oxidation resistance protection of the drying of the easily-oxidized material, the safety protection and recycling of the drying of the organic solvent are realized, the production environment is effectively improved, the exhaust emission in the drying production is eliminated, and the nitrogen can be replaced by other inert gases.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic structural diagram of the liquid inlet section of the present invention;
FIG. 3 is a top view of the hydraulic swivel of the present invention;
FIG. 4 is a view A-A of FIG. 3;
FIG. 5 is a top view of the pneumatic swivel of the present invention;
FIG. 6 is a view B-B of FIG. 5;
1-a liquid inlet section, 2-a first connecting screw, 3-a sealing ring, 4-a liquid-operated swivel, 5-a liquid-operated swivel bearing, 6-a nozzle base piece, 7-a pneumatic swivel, 8-a pneumatic swivel bearing, 9-a compression ring, 10-a second connecting screw, 11-a liquid outlet, 12-a gas outlet, 13-a gas inlet, 14-a liquid inlet, 15-a connecting chassis, 16-a connecting screw hole, 17-a liquid flow channel, 18-an inclined through hole inside the liquid-operated swivel, 19-an inclined through hole inside the pneumatic swivel;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to the attached drawings 1 to 6, the invention discloses a spray head of a double-rotation drying atomizer, which comprises a liquid inlet section 1, a hydraulic rotor 4, a spray head base piece 6 and a pneumatic rotor 7.
The liquid inlet section 1 comprises a liquid inlet 14, a connecting base plate 15 and a liquid flow channel 17;
the liquid inlet section 1 is connected with the atomizer nozzle base piece 6 through a connecting chassis 15;
a sealing ring 3 is arranged between the liquid inlet section 1 and the atomizer nozzle base member 6, so that the leakage of the drying liquid can be avoided;
the interior of the nozzle base piece 6 is a cavity, and the upper end of the cavity is connected to the liquid inlet section liquid flow channel 17;
the hydraulic rotator 4 is arranged on the nozzle base piece 6 through a hydraulic rotator bearing 5 and corresponds to the position of the outlet of the liquid flow channel 17 of the liquid inlet section;
a plurality of inclined through holes 18 which are uniformly distributed at the periphery are formed in the hydraulic rotating body 4, a force couple is formed when the atomized feed liquid passes through the inclined through holes 18, the force couple drives the hydraulic rotating body to rotate at a high speed, the dried feed liquid is accelerated to be atomized under the high-speed rotation of the hydraulic rotating body, and meanwhile, atomized liquid drops rotate at a high speed along with the hydraulic rotating body;
the two sides of the nozzle base piece are symmetrically provided with nitrogen gas inlets 13 which are correspondingly provided with pneumatic rotating bodies;
a pneumatic rotating body 7 is arranged around the liquid outlet side of the cavity of the nozzle base piece through a pressing ring 9;
the pneumatic rotator 7 is arranged on the nozzle base piece 6 through a pneumatic rotator bearing 8, and the pressing ring 9 presses the pneumatic rotator 7 through a second connecting screw 10;
a plurality of inclined through holes 19 which are uniformly distributed on the circumference are formed on the pneumatic rotating body 7;
the inclined through hole 18 on the hydraulic rotating body is opposite to the inclined through hole 19 on the pneumatic rotating body in inclination direction, and the inclined through holes are driven by the impact of the drying material liquid and the high-temperature nitrogen to rotate in different directions respectively.
The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.
Claims (5)
1. A spray head of a double-rotation drying atomizer is characterized by comprising a liquid inlet section, a hydraulic rotating body, a spray head base piece and a pneumatic rotating body.
The liquid inlet section comprises a liquid inlet, a connecting base plate and a liquid flow channel;
the liquid inlet section is connected with the atomizer nozzle base piece through the connecting chassis;
the interior of the spray head base piece is a cavity, and one end of the cavity is connected to the liquid flow channel outlet of the liquid inlet section;
the hydraulic rotating body is arranged on the nozzle base piece and corresponds to the position of the outlet of the liquid flow channel of the liquid inlet section;
a plurality of inclined through holes which are uniformly distributed in the circumference are formed in the hydraulic rotating body;
nitrogen gas inlets are symmetrically formed in two sides of the nozzle base piece, and each nitrogen gas inlet is correspondingly provided with a pneumatic rotating body;
a plurality of inclined through holes which are uniformly distributed on the circumference are formed in the pneumatic rotating body;
the inclined through hole on the hydraulic rotating body is opposite to the inclined direction of the inclined through hole on the pneumatic rotating body.
2. A dual rotary drying atomizer spray head according to claim 1 wherein a seal is disposed between said inlet section and said atomizer spray head base member.
3. The dual rotary drying atomizer spray head of claim 1 wherein said hydraulic swivel is mounted on said spray head base member by a hydraulic swivel bearing.
4. The dual rotary dry atomizer spray head of claim 1 wherein said pneumatic swivel is disposed on said spray head base member by a pneumatic swivel bearing.
5. A dual rotary dry atomizer spray head according to claim 1 or claim 4 further comprising a hold down ring which holds down said pneumatic swivel by a connecting screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011472479.0A CN112587946A (en) | 2020-12-14 | 2020-12-14 | Double-rotation drying atomizer spray head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011472479.0A CN112587946A (en) | 2020-12-14 | 2020-12-14 | Double-rotation drying atomizer spray head |
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| Publication Number | Publication Date |
|---|---|
| CN112587946A true CN112587946A (en) | 2021-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011472479.0A Pending CN112587946A (en) | 2020-12-14 | 2020-12-14 | Double-rotation drying atomizer spray head |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070205303A1 (en) * | 2006-02-21 | 2007-09-06 | Council Of Scientific And Industrial Research. | Jet-wheel impact atomizer for spray drying and a process for the preparation of finely dispersed spray of slurry/liquid |
| CN201632240U (en) * | 2010-02-25 | 2010-11-17 | 横店集团东磁股份有限公司 | Air mixing nozzle |
| CN202876820U (en) * | 2012-11-02 | 2013-04-17 | 常州市中亚化工有限公司 | Spraying device for gas-phase reaction system |
| CN210434711U (en) * | 2019-07-05 | 2020-05-01 | 上海今钧机电工程有限公司 | Rotatory clean shower nozzle of adjustable type of gas-liquid separation speed |
| CN211912756U (en) * | 2019-12-23 | 2020-11-13 | 江苏先导干燥科技有限公司 | Precise spray drying device |
-
2020
- 2020-12-14 CN CN202011472479.0A patent/CN112587946A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070205303A1 (en) * | 2006-02-21 | 2007-09-06 | Council Of Scientific And Industrial Research. | Jet-wheel impact atomizer for spray drying and a process for the preparation of finely dispersed spray of slurry/liquid |
| CN201632240U (en) * | 2010-02-25 | 2010-11-17 | 横店集团东磁股份有限公司 | Air mixing nozzle |
| CN202876820U (en) * | 2012-11-02 | 2013-04-17 | 常州市中亚化工有限公司 | Spraying device for gas-phase reaction system |
| CN210434711U (en) * | 2019-07-05 | 2020-05-01 | 上海今钧机电工程有限公司 | Rotatory clean shower nozzle of adjustable type of gas-liquid separation speed |
| CN211912756U (en) * | 2019-12-23 | 2020-11-13 | 江苏先导干燥科技有限公司 | Precise spray drying device |
Non-Patent Citations (1)
| Title |
|---|
| 田继兰等: "《化工过程原理及其处理方法探究》", 31 July 2019, 中国原子能出版社 * |
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Application publication date: 20210402 |
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