CN202538375U - Centrifugal type spraying drying tower - Google Patents
Centrifugal type spraying drying tower Download PDFInfo
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- CN202538375U CN202538375U CN2012201645715U CN201220164571U CN202538375U CN 202538375 U CN202538375 U CN 202538375U CN 2012201645715 U CN2012201645715 U CN 2012201645715U CN 201220164571 U CN201220164571 U CN 201220164571U CN 202538375 U CN202538375 U CN 202538375U
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- wind direction
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- drying tower
- spraying
- tower
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Abstract
The utility model relates to a centrifugal type spraying drying tower of a spraying granulation drying unit. The centrifugal type spraying drying tower comprises a tower top, a tower body and a conical tower body which are sequentially connected up and down in a sealing manner, wherein an atomizer is arranged at the center of the bottom surface of the tower top, and a pressure nozzle used for spraying dry powder upwards is arranged in the spraying drying tower and positioned under the atomizer. By adopting modes of downwards spraying on the top and upwards spraying the dry powder on the bottom, compared with the upwards spraying mode, the downwards spraying mode is suitable for enabling mist drops to be further refined and density of the mist drops to be increased, so that the mist drops are in full and high-density contact with the dry powder. In addition, in a descending process of the mist drops, particle fines in the mist drops take on a vicious semi-wet state rapidly and are bonded with the oncoming dry powder to form a particle body with lower integral humidity, therefore, granulation and drying can be realized without using a bonding agent.
Description
Technical field
The utility model relates to the technical field of drying equipment, specifically is a kind of centrifugal spray drying tower of spraying granulation fluidized drying unit.
Background technology
Existing spray granulating and drying machine is widely used in industries such as chemical industry, medicine, food, is used for the preparation of tablet, electuary, capsule, instant food, beverage particles, slow-releasing granules, chemical granule etc.
The technological process of existing spray granulating and drying machine generally is: air heater via heating is laggard goes into the fluid bed bottom, passes distribution grid and contacts with material, makes material be fluidization.The good binding agent of mother liquor is delivered to atomizer respectively by compression pump, coats the fluidized particles surface after the atomizing so that particle bonds each other, and through constantly fluidisation, coating, drying, particle is grown up gradually, discharges from the fluid bed discharging opening after reaching desired granularity.
The dry technological process of another kind of spraying granulation is: droplet and hot-air are worked with the mode of mixed flow; Hot-air is to get in the tower through the hot-air distributor on the top cover; Hot-air distributor produces one downward streamline air draught, and droplet sprays into thermal air current from bottom to top.Droplet is owing to surface tension effects forms sphere, and simultaneously because droplet has very big surface area, wherein the rapid evaporation drying of moisture forms dry spheric granules powder and finally shrink.
The weak point of above-mentioned prior art is: must contain binding agent in the droplet of spraying granulation drying, otherwise can't granulate.And the use binding agent makes production cost higher on the one hand, and binding agent tends to influence product quality on the other hand.
How being suitable for the efficient spraying granulation dryer group dry, that need not to use binding agent of granulating through a kind of, is the technical barrier of this area.
Summary of the invention
The technical problem that the utility model will solve provide a kind of simple in structure, be suitable for the efficient centrifugal spray drying tower dry, that need not to use binding agent of granulating.
For solving the problems of the technologies described above, the centrifugal spray drying tower 1 that the utility model provides comprises: successively at the bottom of the cat head 1.1, tower body 1.2 and the taper tower that connect of upper-lower seal 1.3; Cat head 1.1 bottom center are provided with atomizer 1.4, in this spray drying tower 1 and under said atomizer 1.4, are provided with to be used for the upwards pressure nozzle 1.5 of spray powder, and this pressure nozzle 1.5 links to each other with the dry powder powder feed system.
Said cat head 1.1 is provided with the branch vane 1.6 that links to each other with hot-air system, and annular is evenly distributed with a plurality of hot blast shower nozzles 1.7 that link to each other with minute vane 1.6 on cat head 1.1 bottom surfaces, and each hot blast shower nozzle 1.7 is suitable for exporting the hot blast tangent with the inwall of barrel-type tower body 1.2.During work; The multiply hot blast of each hot blast shower nozzle 1.7 output is downward along the spiral inner wall of tower body 1.2; It is descending and contact, be bonded to plastochondria with dry powder particle that the multiply whirlwind carries droplet; Make the said plastochondria of multiply whirlwind have long dry trip simultaneously, guaranteed drying effect said plastochondria.
Said hot blast shower nozzle 1.7 comprises: the conical shell that the top links to each other with said minute vane 1.6; Be evenly distributed with a plurality of parallel wind direction blade 1.7.1 on the bottom nozzle 1.7.0 of this conical shell; The two ends central authorities of each wind direction blade 1.7.1 are provided with rotating shaft 1.7.2, and the outer end of this rotating shaft 1.7.2 is rotatably assorted with the shaft seat 1.7.3 that is located on the bottom nozzle 1.7.0 of said conical shell; The same lateral edges of each wind direction blade 1.7.1 and the wind direction of axial distribution control cable are fixedly linked, and are provided with the hollow connecting rod 1.7.4 that is sheathed on the said wind direction control cable between the adjacent wind direction blade 1.7.1; The two ends of wind direction control cable are extended said conical shell and are linked to each other with a pair of wind direction adjusting handle 1.7.8 that is located at cat head 1.1 tops respectively; This is a pair of coordinated type handwheel to wind direction adjusting handle 1.7.8; Be used for the said wind direction of folding and unfolding respectively control cable and control described each wind direction blade 1.7.1 towards; And then the adjusting wind direction, make the inwall of hot blast and barrel-type tower body 1.2 of hot blast shower nozzle 1.7 output tangent.After each wind direction blade 1.7.1 regulated and puts in place, described a pair of handwheel adopted position-limit mechanism to fix.
The body that said hot blast shower nozzle 1.7 links to each other with minute vane 1.6 is provided with volume damper 1.8, is used to make the air output of each hot blast shower nozzle 1.7 identical, so that the whirlwind air quantity basically identical of each hot blast shower nozzle output, and then makes granulation effect basically identical.
The both sides of said wind direction control cable are distributed with assist with cable parallel with this wind direction control cable and that be fixedly linked with the same lateral edges of each wind direction blade 1.7.1, so that each wind direction blade 1.7.1 keeping parallelism.Be arranged with the hollow connecting rod 1.7.4 that is between the adjacent wind direction blade 1.7.1 on this assist with cable; The length of each hollow connecting rod 1.7.4 is consistent with the spacing of said adjacent wind direction blade 1.7.1; Playing a supporting role, and prevent wind direction blade 1.7.1 distortion.
Said pressure nozzle 1.5 comprises one, and to be sphere, arc angle be that 120 °-130 ° the air-flow that dusts divides sheet 1.5.1; This air-flow that dusts divides and is evenly equipped with flour opening 1.5.0 on the sheet 1.5.1; The center line axial distribution of each flour opening 1.5.0 is so that the dry powder of ejection evenly scatters in all angles that make progress.
A kind of drying system of using above-mentioned centrifugal spray drying tower, it comprises the spray air heat exchanger, this spray air heat exchanger comprises: the preheating unit of heat exchange unit that the multilayer upper-lower seal connects and the heat exchange unit below that is sealedly attached to bottom; This preheating unit comprises the multilayer that upper-lower seal connects; The thermal medium inlet of each heat exchange unit links to each other with the saturated steam carrier pipe; The thermal medium outlet of each heat exchange unit is through linking to each other with the thermal medium inlet of each preheating unit behind the steam trap; The thermal medium outlet output condensed water of each preheating unit; This condensed water is sent back to boiler, regenerates the said saturated steam that is not less than 130 ℃.
Discharging opening at the bottom of the said taper tower links to each other with the feeding mouth of horizontal boiling bed through first Blowing stopper, and the bed board top in the horizontal boiling bed is provided with electric mixing device.
The method of work of above-mentioned drying system; It comprises: atomizer 1.4 is with pressure nozzle 1.5 spraying downwards respectively simultaneously, spray powder makes progress; Hot blast shower nozzle 1.7 output a blast of hot air simultaneously, the multiply hot blast is downward along the spiral inner wall of tower body 1.2, and it is descending and contact, be bonded to plastochondria with dry powder particle that the multiply whirlwind carries droplet; And at the bottom of said taper tower, 1.3 compiling the moulding pellet, pellet is exported through Blowing stopper.
As the scheme of optimizing, the relative velocity of the dry powder that the droplet of the spacing of atomizer 1.4 and pressure nozzle 1.5, atomizer 1.4 ejections and pressure nozzle 1.5 spray is suitable for making droplet and dry powder to cross fully and makes its intersection cover the cross section of tower body 1.2 just.
The technique effect that the utlity model has:
(1) mode that spray downwards in the employing top, the bottom makes progress spray powder of the utility model, with respect to the spraying that makes progress, adopting sprays downwards is suitable for making the further refinement of droplet and increases droplet density, guarantees that droplet is abundant with dry powder, high density contacts; In addition, in the descending process of droplet, the particle fines in the droplet is adhesive half wet condition rapidly and is bonded to the lower plastochondria of overall humidity with oncoming dry powder, so need not to use binding agent just can realize granulating and drying.
When (2) dryer group of the utility model is worked; The multiply hot blast of each hot blast shower nozzle output forms the multiply whirlwind downwards along the spiral inner wall of tower body; It is descending and contact, be bonded to plastochondria with the high density dry powder particle that each strand whirlwind carries the high density droplet; The multiply whirlwind makes said plastochondria have long dry trip simultaneously, has guaranteed the drying effect to said plastochondria.The multiply whirlwind plays the cleaning effect to the inwall of drying tower simultaneously, prevents that material from gluing wall, coking.
(3) the hot blast shower nozzle of the utility model adopts the shutter of adjustable wind direction, guarantees to export the hot blast tangent with the inwall of barrel-type tower body.
(4) heat exchanger of the utility model is suitable for utilizing flash steam, the hot water preheating gas to be heated of abundant 130 ℃ superheated water generation, has significantly improved utilization efficiency of heat energy.
(5) be provided with agitating device in the horizontal boiling bed of the utility model, be suitable for improving drying efficiency.
Description of drawings
For the content that makes the utility model is more clearly understood, below basis specific embodiment and combine accompanying drawing, the utility model is done further detailed explanation, wherein
Fig. 1 is the structural representation of the dryer group of the utility model;
Fig. 2 is the partial structurtes sketch map of the centrifugal spray drying tower of the utility model;
Fig. 3 is the B-B profile among Fig. 2;
Fig. 4 is said hot blast shower nozzle and the local enlarged drawing thereof among Fig. 3;
Fig. 5 is the partial enlarged drawing that the air-flow that dusts of said pressure nozzle divides sheet;
Fig. 6 is the horizontal boiling bed and the cooling bed enlarged drawing of horizontal boiling of the utility model;
Fig. 7 is the internal structure sketch map of the horizontal boiling bed of the utility model.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is elaborated:
Like Fig. 1, the spraying granulation fluidized drying unit of present embodiment, it comprises: centrifugal spray drying tower 1, this spray drying tower 1 comprise at the bottom of cat head 1.1, tower body 1.2 and the taper tower that upper-lower seal successively connects 1.3; Said cat head 1.1 is provided with the branch vane 1.6 that links to each other with hot-air system.Said hot-air system comprises spray air heat exchanger 5, and the top outlet inlet of spray air heat exchanger 5 links to each other with the air intake vent of said minute vane 1.6 through electric heater 10, the first high temperature high efficiency particulate air filter 9 successively.The bottom air intake vent of spray air heat exchanger 5 links to each other with the air outlet of spraying air blast 24, and the air inlet of this air blast 24 is imitated filter 23 with first junior middle school and linked to each other.
The charging basket 18 that is used to hold feed liquid links to each other with said atomizer 1.4 through Mono pump.
Said tower body 1.2 is a jacket type structure; The top in the chuck chamber of tower body 1.2 links to each other with the exhaust outlet of a cooling retaining wall blower fan 12; Be used to cool off the inwall of tower body 1.2; This inwall is used for and the pellet generation heat exchange of accomplishing granulation, makes the quick cooling curing of pellet, prevents sticking wall and prevents that inwall is overheated and make material generation coking.
Said hot-air system comprises spray air heat exchanger 5, and this spray air heat exchanger 5 comprises: heat exchange unit 5.1 that the multilayer upper-lower seal connects and the preheating unit 5.2 that is sealedly attached to heat exchange unit 5.1 belows of bottom; This preheating unit 5.2 comprises the multilayer that upper-lower seal connects; The bottom air intake vent that is in the preheating unit 5.2 of the bottom links to each other with the air outlet of spraying air blast 24, and the top outlet inlet of the heat exchange unit 5.1 of top layer links to each other with the air intake vent of said minute vane 1.6 through electric heater 10, the first high temperature high efficiency particulate air filter 9 successively.The air inlet of said air blast 24 is imitated filter 23 with first junior middle school and is linked to each other.
The thermal medium inlet of each heat exchange unit 5.1 links to each other with the saturated steam carrier pipe; The thermal medium outlet of each heat exchange unit 5.1 links to each other with the thermal medium inlet of each preheating unit 5.2 through a steam trap 11 backs; The thermal medium outlet output condensed water of each preheating unit 5.2; This condensed water is sent back to boiler, regenerates the said saturated steam that is not less than 130 ℃.
During use; 130 ℃ saturated steam send into each heat exchange unit 5.1 and fluidized drying with gas converting heat after the superheated water of 130 ℃ of outputs; This superheated water of 130 ℃ generates flash steam behind said steam trap 11; And be 100 ℃ vapour-liquid admixture, and send into each preheating unit 5.2 heat exchange, be used for the said fluidized drying of preheating and use gas; Successively heated through each heat exchange unit 5.1 again by the gas of preheating, finally reach required temperature.
In the heat transfer process of each heat exchange unit 5.1,130 ℃ saturated steam is emitted covert heat in the process that is condensed into 130 ℃ of water, makes the heat exchange coil in each heat exchange unit 5.1 remain at 130 ℃; And then make fluidized drying after heat exchange successively, reach 120 ℃ basically with gas.
Said 130 ℃ superheated water is sent into each preheating unit 5.2 behind said steam trap 11, use gas, be beneficial to the raising thermal energy conversion efficiency, with energy-conservation with the said fluidized drying of preheating.
1.3 discharging opening links to each other with the feeding mouth of horizontal boiling bed 7 through first Blowing stopper 1.9 at the bottom of the said taper tower, and the bed board top in the horizontal boiling bed 7 is provided with electric mixing device 7.4 and dust-removal cloth-bag 7.2 successively.
The discharging opening of said horizontal boiling bed 7 links to each other through the feeding mouth of a flow control valve 7.3 with a horizontal boiling cooling bed 8; The discharging opening of this horizontal boiling cooling bed 8 links to each other with a screening machine 27 through second Blowing stopper 26; The finished product pellet outlet of screening machine 27 links to each other with the feeding mouth of a weighing-packaging machine 28, and the fine powder outlet of screening machine 27 links to each other with Wen's feeder 22 through air conveying line.Wen's feeder 22 is adjustable Wen's feeder, and this Wen's feeder 22 links to each other with the discharging opening of first efficient cyclone separator, 21 bottoms.
The hot-air inlet pipe 7.5 of said horizontal boiling bed 7 bottoms links to each other with boiling air heat exchanger 35 through high temperature high efficiency particulate air filter 32; This boiling air heat exchanger 35 is identical with the structure of said spray air heat exchanger 5.
The cold wind blast pipe 8.1 of the bottom of said horizontal boiling cooling bed 8 links to each other with a cooled dehumidifier unit 29 through high efficiency particulate air filter 30.
When the pellet aridity of some type of spray drying tower 1 output is not enough, adopt horizontal boiling bed 7 further dry said pellets.When the pellet aridity of spray drying tower 1 output is up to standard, see and omit horizontal boiling bed 7, directly adopt said horizontal boiling cooling bed 8 to cool off said pellet.
The top of 1.3 discharging opening is provided with exhausting pipeline 20 at the bottom of the contiguous said taper tower, and exhausting pipeline 20 links to each other with second efficient cyclone separator 14, spraying air-introduced machine 15 successively.The bottom discharge mouth of first cyclone separator 14 links to each other through the feeding mouth of a Blowing stopper with said horizontal boiling bed 7.
Obviously, the foregoing description only be for explain clearly that the utility model does for example, and be not to be qualification to the embodiment of the utility model.For the those of ordinary skill in affiliated field, on the basis of above-mentioned explanation, can also make other multi-form variation or change.Here need not also can't give exhaustive to all embodiments.And conspicuous variation that these spirit that belong to the utility model are extended out or change still are among the protection domain of the utility model.
Claims (6)
1. centrifugal spray drying tower, it comprises at the bottom of cat head, tower body and the taper tower that upper-lower seal connects successively; It is characterized in that: cat head bottom center is provided with atomizer, in this spray drying tower and under said atomizer, is provided with to be used for the upwards pressure nozzle of spray powder.
2. centrifugal spray drying tower according to claim 1; It is characterized in that: said cat head is provided with the branch vane that links to each other with hot-air system; Annular is evenly distributed with a plurality of hot blast shower nozzles that link to each other with minute vane on the cat head bottom surface, and each hot blast shower nozzle is suitable for exporting the hot blast tangent with the inwall of barrel-type tower body.
3. centrifugal spray drying tower according to claim 2; It is characterized in that: said hot blast shower nozzle comprises: the conical shell that the top links to each other with said minute vane; Be evenly distributed with a plurality of parallel wind direction blades on the bottom nozzle of this conical shell; The two ends central authorities of each wind direction blade are provided with rotating shaft, and the outer end of this rotating shaft is rotatably assorted with the shaft seat of being located on the bottom nozzle of said conical shell; The same lateral edges of each wind direction blade and the wind direction of axial distribution control cable are fixedly linked, and are provided with the hollow connecting rod that is sheathed on the said wind direction control cable between the adjacent wind direction blade; The two ends of wind direction control cable are extended said conical shell and are linked to each other with a pair of wind direction adjusting handle of being located at the cat head top respectively; This is a pair of coordinated type handwheel to the wind direction adjusting handle; Be used for the said wind direction of folding and unfolding respectively control cable and control described each wind direction blade towards, make the inwall of hot blast and barrel-type tower body of hot blast shower nozzle output tangent.
4. centrifugal spray drying tower according to claim 3 is characterized in that: after described each wind direction blade was regulated and put in place, described a pair of handwheel adopted position-limit mechanism to fix; Said hot blast shower nozzle is provided with volume damper with the body that minute vane links to each other, and is used to make the air output of each hot blast shower nozzle identical.
5. centrifugal spray drying tower according to claim 4; It is characterized in that: the both sides of said wind direction control cable are distributed with assist with cable parallel with this wind direction control cable and that be fixedly linked with the same lateral edges of each wind direction blade, so that each wind direction blade keeping parallelism; Be arranged with the hollow connecting rod that is between the adjacent wind direction blade on this assist with cable.
6. centrifugal spray drying tower according to claim 5; It is characterized in that: said pressure nozzle comprises one, and to be sphere, arc angle be that 120 °-130 ° the air-flow that dusts divides sheet; This air-flow that dusts divides and is evenly equipped with flour opening on the sheet, the center line axial distribution of each flour opening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201645715U CN202538375U (en) | 2012-04-17 | 2012-04-17 | Centrifugal type spraying drying tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201645715U CN202538375U (en) | 2012-04-17 | 2012-04-17 | Centrifugal type spraying drying tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202538375U true CN202538375U (en) | 2012-11-21 |
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ID=47159069
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201645715U Withdrawn - After Issue CN202538375U (en) | 2012-04-17 | 2012-04-17 | Centrifugal type spraying drying tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202538375U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847329A (en) * | 2012-04-17 | 2013-01-02 | 常州市宇通干燥设备有限公司 | Centrifugal spray drying tower of spray granulation fluidized drying unit |
| CN106607197A (en) * | 2015-10-22 | 2017-05-03 | 中国石油化工股份有限公司 | Centrifugal atomizing nozzle and spray dryer |
-
2012
- 2012-04-17 CN CN2012201645715U patent/CN202538375U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847329A (en) * | 2012-04-17 | 2013-01-02 | 常州市宇通干燥设备有限公司 | Centrifugal spray drying tower of spray granulation fluidized drying unit |
| CN102847329B (en) * | 2012-04-17 | 2014-06-18 | 江苏宇通干燥工程有限公司 | Centrifugal spray drying tower of spray granulation fluidized drying unit |
| CN106607197A (en) * | 2015-10-22 | 2017-05-03 | 中国石油化工股份有限公司 | Centrifugal atomizing nozzle and spray dryer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20121121 Effective date of abandoning: 20140618 |
|
| RGAV | Abandon patent right to avoid regrant |