CN201081521Y - Air flow drying device for material - Google Patents
Air flow drying device for material Download PDFInfo
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- CN201081521Y CN201081521Y CNU2007201540055U CN200720154005U CN201081521Y CN 201081521 Y CN201081521 Y CN 201081521Y CN U2007201540055 U CNU2007201540055 U CN U2007201540055U CN 200720154005 U CN200720154005 U CN 200720154005U CN 201081521 Y CN201081521 Y CN 201081521Y
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Abstract
The utility model relates to an air flow drying apparatus for materials. The air flow drying or cooling apparatus of the utility model comprises an air inlet pipe, an air preheater, a drying pipe, an exhaust duct and a power system which are communicated in turn, wherein, the power system makes air flow in the pipes; a feeder and a material crusher are respectively arranged on the drying pipe; the drying pipe is connected with the feeder and the material crusher according to flow by means of subsections; an air flow sieving machine which is used for particle size classification of the materials is also connected with the drying pipe on the rear of the material crusher. The utility model fully utilizes air flow drying or cooling fluidized characteristics and integrates crushing and sieving processes of the materials into air flow drying or cooling process, thereby process steps are simplified and material flow is shortened; particularly, particle size classification of products can be effectively realized when the products have particle size classification requirements.
Description
Technical field
The utility model relates to a kind of Pneumatic drying device and cooling device of material, and this Pneumatic drying device and cooling device are mainly used in the dry and cooling of powder.
Background technology
Pneumatic drying device is the very general a kind of powder drying equipment of using in the powder technology, its drying principles is to adopt preheated air to carry powder material to form gas, solid phase mixing logistics in dry pipeline, after the exchange heat of a period of time, gas, solid two is separated, moisture content in the material effluxes with air with the form of steam, thereby realizes the process of powder drying.Find in the industrial production, powder material easily produces caking phenomenon in the pneumatic conveying drying process, influence product quality, and Pneumatic drying device of the prior art can not effectively address this problem, normally after finishing dry run, be equipped with screening plant in the separator back to separate caking materials.
Follow-up processing flow to the piece material is comparatively complicated, and a kind of way is to set up the piece material treatment system that treating apparatus forms a cover sealing, and system equipment comprises disintegrating machine, screening machine, bucket elevator etc.; Another kind of way is that the piece material that comes out of screening mixes the circulation fragmentation of realization piece material by the charging aperture that conveying equipment is transported to pneumatic conveyer dryer with material to be dried after fragmentation.Comparatively speaking, it is economical, reasonable that the latter obviously wants, and needs the number of devices of increase less relatively, but need the conveyance capacity of corresponding increase Pneumatic drying device.Adopt which kind of way to make that all the process device of powder Pneumatic drying device is many and complicated, the plant investment of unit capacity is bigger, material flow is long, the operating cost height, install not energy-conservation, especially when product has requiring of grading, the Pneumatic drying device of prior art is helpless, count the comparatively approaching powder material of distribution for order and carry out grading, at present, still lack desirable separation method and device in the commercial Application.
The utility model content
As everyone knows, the transmission or the conveying of three kinds of physical forms that relate in the commercial plant, the most complicated with the transmission or the conveying flow process of solid matter, transmission or the cost of carrying are the highest, and the investment of related device is also maximum.Therefore, it is simple and direct all should to make every effort to flow process to any processing procedure of solid material, improves process efficiency, reduces the process link.
The utility model is at above shortcomings in the prior art, a kind of fluidization feature that makes full use of gas, solid mixture in the pneumatic conveying drying process is provided, the fragmentation of material and screening process are integrated in Pneumatic drying device among the pneumatic conveying drying process, and a kind of fluidization feature that makes full use of gas, solid mixture in the air-flow cooling procedure, the fragmentation of material and screening process are integrated in air-flow cooling device among the air-flow cooling procedure.Since the drying of material or fragmentation and the screening stage that cooling procedure can extend to material, thus make whole apparatus structure compactness, and flow process is simple and direct.
The technical scheme that solution the utility model technical problem is adopted is that the Pneumatic drying device of this material comprises air inlet pipe, air preheater, dry pipeline, air draft pipeline that is communicated with successively and the dynamical system that gas is flowed in above-mentioned pipeline, be connected with charger, material crusher respectively on the dry pipeline, dry pipeline segmentation connects charger, material crusher following current journey.
Preferably can be connected with air purifier at described air inlet pipe front end.
Described material crusher can adopt centrifugal crusher, this centrifugal crusher comprises housing, lower housing portion is the surge bunker that is used for the splendid attire material, surge bunker is communicated with dry pipeline back segment, housing is built-in with the mozzle that communicates with dry pipeline leading portion, draft tube outlets end top is provided with rotatable impeller, and the impeller top is provided with can be for the separation hood that passes through with gas after caking materials separates, and separation hood is communicated with dry pipeline back segment.
The impeller below also can be provided with first screen cloth, and the bottom of first screen cloth joins with mozzle and is communicated with, and preferred first screen cloth is the back taper screen cloth.The mesh of first screen cloth is selected and can be decided also can change according to the granularity demand of fragmentation in good time.This centrifugal crusher can be simplified the dry run link, shortens material flow.
Material is under the impeller action of centrifugal force, along in the process of first screen surface spiral downslide, small particles material will pass screen cloth, enter the surge bunker of disintegrating machine bottom, and large granular materials enters mozzle when being slipped to first screen bottom, the high-speed mixing air-flow in the diversed pipe carries, rush at impeller once more, thereby can realize the circulation of shattering process, be crushed to the granularity requirements of appointment fully, finally fall into the surge bunker of centrifugal crusher bottom up to caking materials.
Preferably, the injector that improves air-flow velocity can be housed also on the mozzle of first screen bottom, first screen cloth below is provided with the blanking awl that bootable material enters surge bunker.
In addition, can be provided with in order to hold back the little screen cloth of the lump material that does not meet granularity requirements in the bottom of separation hood, the mesh size of little screen cloth should be consistent with the mesh size of first screen cloth of impeller below, in addition, the bottom of surge bunker is communicated with separation hood by dry pipeline, and the self-feeder of control mass flow also is equipped with at this place.
For balance impeller both sides rotate the pressure differential that forms because of impeller, to reduce the resistance that air-flow passes impeller, preferred impeller comprises positive impeller and accessory impeller, and positive impeller and accessory impeller are set up dorsad, positive impeller face is to the draft tube outlets end, and accessory impeller is located at the back side of positive impeller.Described impeller can comprise the blade of a plurality of swirling flow types, is provided with eggplant shape through hole between every two adjacent blades, passes impeller so that the air of gas, solid phase separation has enough overflow sections.
The effect one of accessory impeller is the static air pressure that reduces the upper impeller space; The 2nd, the material that directly passes impeller can be carried out centrifugation.
Centrifugal crusher is the device that is used for the material fragmentation in the Pneumatic drying device, described impeller is arranged at directly over the enclosure interior, when mixed airflow when its axial high speed passes centrifugal crusher, wherein the solid material of taking under the turning effort of impeller by centrifugation, tangentially rush at inner walls along impeller, make its with the high velocity impact of inner walls in broken, the power of centrifugal fragmentation comes from the centrifugal force that material is bestowed in the impeller rotation, and the quality of material particles and the rotating speed of impeller will determine the degree that material is separated.Caking materials is bigger because of quality, and the centrifugal force of generation is also bigger, and the collision effect of itself and crusher shell inner surface is also remarkable more, thereby has strengthened the effect of the centrifugal fragmentation of caking materials.For helping fragmentation, the crusher shell material can adopt the higher high-abrasive material manufacturing of hardness, and strengthens the friction effect of its inner surface.
When material need carry out the classification processing, also can be connected with the airflow shifting machine that is used for material is carried out grading on the dry pipeline back segment after the centrifugal crusher.Described airflow shifting machine can comprise and returns blowing device, airflow chamber and drawing mechanism, needs according to the granularity extension set in the airflow chamber can be provided with one or more layers screen cloth, drawing mechanism is located at the bottom of each screen cloth, the drawing mechanism bottom can be connected to classifying bunker, return that blowing device is located at before the ground floor screen cloth and with the air draft pipeline connection.
Flowing to of screen plane and mixed airflow is angled, and when mixed airflow rushed at screen cloth at a high speed, the time compole that passes airflow shifting machine owing to air-flow was short, and the less material of granularity passes screen cloth with air-flow, and the material that granularity is bigger is then held back step by step by screen cloth.The degree of depth for the control grading, in the airflow chamber bottom, the effect of returning blowing device that is provided with before the ground floor screen cloth is that material carries out blowback before the sieve that will be trapped, this blowback air-flow forms local eddy airstream with the powerful mixed airflow effect that comes from import, make material screening repeatedly before the ground floor screen cloth, thereby improve the grading rate.Material after the classification is delivered to the classifying bunker of airflow shifting machine bottom respectively by drawing mechanism, thereby finishes the grading of product.Wherein, the big I of the number of plies of set screen cloth and screen cloth mesh requires to decide according to concrete grading.
The air-flow of discharging from the centrifugal crusher separation hood turns back to the surge bunker bottom powder material after the fragmentation is carried the formation mixed airflow once more, continues dry run, and is airflow screening process creation fluidization condition.Preferably on the dry pipeline of centrifugal crusher bottom, also be provided with the mixer-ejector that is used for mixed material.
Between airflow shifting machine and air draft pipeline, also can be connected with deduster, be used to purify vent gas.
The dynamical system that described gas flows in pipeline can be the air blast of being located at the air inlet pipe arrival end and is located at the air-introduced machine of exhaust duct way outlet end.
Production practices show, the caking that some powder material is formed in dry run, when being dried fully, it carries out fragmentation, it is not optimum state, keeping amount of water is broken all the better easily, therefore, the Pneumatic drying device of the utility model material, its shattering process not necessarily must be put into after dry run thoroughly finishes, especially when including the airflow shifting machine that is used for stock grading in the device, the position of centrifugal crusher in Pneumatic drying device can be decided according to helping broken principle, makes the moisture percentage of material be in optimal broken state, to improve crushing efficiency.The shattering process of Pneumatic drying device of the prior art then can only just can be carried out in the dry run end and after gas, solid two is separated.
The utility model Pneumatic drying device is provided with centrifugal crusher and airflow shifting machine by section in position, thereby the drying of material, broken and screening process are become one.
When material take other such as: during dried forms such as the calcining of straight fire, steam calcination, the utility model also can be used as the air-flow cooling device and uses, and finishes the process integration of cooling, fragmentation and grading.As everyone knows, the operating temperature of straight fire calcining or steam calcination process is higher, and material is the easier caking phenomenon that occurs in this process, and because operating temperature is higher, can pack after material need be lowered the temperature, and therefore cooling is essential often with shattering process.When the utility model was used for the material cooling, only the air preheater that need remove in the former drying device got final product, and cooling medium adopts the air under the environment temperature, that is:
A kind of air-flow cooling device of material, comprise air inlet pipe, the air cooled tube road under the environment temperature, air draft pipeline that is communicated with successively and the dynamical system that gas is flowed in above-mentioned pipeline, be connected with charger, material crusher and airflow shifting machine on the air cooled tube road respectively, the air cooled tube road connects charger, material crusher and airflow shifting machine following current journey.
The material crusher that adopts in this air-flow cooling device also can be above-mentioned centrifugal crusher.
In the utility model, the fluidization feature that the working mechanism of centrifugal crusher and airflow shifting machine has all utilized pneumatic conveying drying process gas, solid mixture to flow, just because of this, dry or the cooling of material can extend to the fragmentation and the screening stage of material, thereby make whole apparatus structure compactness, flow process is simple and direct.
The beneficial effects of the utility model are: fragmentation, the screening process of powder material are combined with pneumatic conveying drying or cooling procedure, when realizing dry materials or cooling procedure, finish fragmentation, screening and conveying to material, thereby simplify, shorten flow process, reduce the production run cost, improve product quality.
Description of drawings
Fig. 1 is the structural representation of Pneumatic drying device in the utility model;
Fig. 2 is the vertical structure schematic diagram of centrifugal crusher in the utility model;
Fig. 3 is the vertical structure schematic diagram of airflow shifting machine in the utility model;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the structural front view of impeller in the utility model centrifugal crusher;
Fig. 6 is the vertical view of Fig. 5.
Among the figure: 1-air-introduced machine, 2-return the blowing pipeline, 3-classifying bunker, 4-centrifugal crusher, the 5-mixer-ejector, 6-air purifier, 7-air blast, 8-air preheater, the 9-charger, the dry pipeline of 10-, 11-airflow shifting machine, the 12-deduster, 13-air draft pipeline, 14-returns blowing device, the 15-screen cloth, 16-airflow chamber, 17-drawing mechanism, the 18-self-feeder, 19-surge bunker, 20-mozzle, the 21-injector, 22-first screen cloth, 23-impeller, the 24-frame, 25-power set, 26-separation hood, the 27-housing, 28-blanking awl, the positive impeller of 29-, the 30-accessory impeller, 31-air inlet pipe, 32-eggplant shape through hole.
The specific embodiment
The utility model is described in further detail below in conjunction with embodiment and accompanying drawing.
Following embodiment is non-limiting embodiment of the present utility model.
Shown in Fig. 1 is the structural representation that the utility model is used for powder material is carried out dry Pneumatic drying device.Relate to the two media source in this device workflow: air and powder material to be dried.
As shown in Figure 1, the utility model gas drier comprises air inlet pipe 31, air preheater 8, dry pipeline 10, centrifugal crusher 4, airflow shifting machine 11, deduster 12, air draft pipeline 13 that is communicated with successively and the dynamical system that material is flowed in above-mentioned pipeline, be connected with air purifier 6 on the air inlet pipe 31, dry pipeline 10 front ends are connected with feed screw 9.On the pipeline between centrifugal crusher 4 outlet at bottom ends and the gas screening machine 11, also be provided with the mixer-ejector 5 that is used for the injection mixed airflow.In the present embodiment, dynamical system comprises air blast 7 that is connected on the air inlet pipe 31 and the air-introduced machine 1 that is connected on the air draft pipeline 13.
The basic principle of using the utility model Pneumatic drying device to carry out drying is: outside air enters air inlet pipe 31 after air purifier 6 is removed dust, then air enters air preheater 8 and carries out heat exchange to improve air themperature, make its heat carrier that becomes this device, the thermal source of air preheater 8 adopts low-pressure steam or electric heater usually; High temperature air fully mixes dry pipeline 10 under feed zone and the high velocity turbulent flow effect of hygrometric state material at air that comes from feed screw 9 and carries out exchange heat, thus material carry in the device liquid moisture content through with the sufficient heat exchange of air after become water vapour under the steam state effluxes the realization material with air dry run.
With regard to dry run, the utility model is consistent with the principle of Pneumatic drying device in the prior art, but the utility model can be handled the material caking that occurs in the dry run better.Therefore in powder pneumatic conveying drying of the present utility model or cooling device, set up centrifugal crusher 4 and be used for the fragmentation of caking materials.
As shown in Figure 2, centrifugal crusher 4 comprises housing 27, housing 27 bottoms are the surge bunker 19 that is used for the splendid attire material, housing 27 is built-in with the mozzle 20 that communicates with hull outside, the top of mozzle 20 ports of export also is provided with rotatable impeller 23, the mesh that also is provided with first screen cloth, 22, the first screen clothes 22 of back taper between mozzle 20 and impeller 23 is selected and can be decided also can change according to the granularity demand of fragmentation in good time.The bottom of first screen cloth 22 joins with mozzle 20 and is communicated with, and the injector 21 that can improve material flow also is housed on this place's mozzle 20.Below first screen cloth 22, be provided with the blanking awl 28 that bootable separation of material enters surge bunker 19.The surge bunker 19 of centrifugal crusher bottom is communicated with airflow shifting machine 11 by dry pipeline.Impeller 23 tops be provided with can for feed separation after the separation hood 26 that passes through of gas, the bottom of separation hood 26 is provided with the little screen cloth identical with first screen cloth, 22 order numbers in order to hold back the lump material that does not meet granularity requirements, the self-feeder 18 that is used to control the feed flow is equipped with at the outlet at bottom place of surge bunker 19, and the separation hood 26 at itself and centrifugal crusher top is by dry pipeline connection.
Shown in Fig. 5,6, in the present embodiment, impeller 23 is to be leaned against by identical positive impeller 29 of blade construction and accessory impeller 30 to combine, wherein the impeller of relative wind direction is positive impeller 29, the impeller of airflow direction is an accessory impeller 30 dorsad, and the two adopts securing member to connect, and the effect one of accessory impeller 30 is the static air pressures that reduce impeller 23 upper spaces, with the pressure differential that balance impeller both sides form because of the impeller rotation, the resistance when passing impeller to reduce air-flow; The 2nd, will directly pass the material centrifugation of impeller, make it get back to surge bunker 19.
In positive impeller 29 and the accessory impeller 30, enough overflow sections pass impeller and discharge centrifugal crusher after separation hood 26 filters so that the air of gas, solid phase separation has to have eggplant shape through hole 32 between every two adjacent blades.
Shown in Fig. 1,3,4, airflow shifting machine 11 comprises and returns blowing device 14, airflow chamber 16 and drawing mechanism 17.Needs according to classification in the airflow chamber 16 can be provided with one or more layers screen cloth 15, and screen cloth 15 is three layers of the dip-parallel placement in the present embodiment, and drawing mechanism 17 is located at the bottom of each screen cloth.Drawing mechanism is connected to classifying bunker 3 17 times.
As shown in Figure 2, when gas, solid mixture are flowed through mozzle 20 when entering centrifugal crusher 4, in the port of export of mozzle 20 and the impeller 23 vertical collisions of centrifugal crusher 4 tops setting, the solid material centrifugation in the mixed airflow is come out in the turning effort of impeller 23, throw to the inner walls of centrifugal crusher 4, make lump material with the collision of inner walls, friction in broken.The rotary power of impeller 23 is from power set 25, carries out transmission by frame 24 between itself and the impeller 23.For ease of operation and control, the power set variable ratio frequency changer is regulated the rotating speed of impeller 23.It may be noted that the primary collision process is to guarantee 100% crushing efficiency, centrifugal crusher 4 must solve shattering processes circulation problems repeatedly, and for this reason, the effect that is provided with first screen cloth, 22, the first screen clothes 22 of back taper at housing 27 middle parts is to hold back the piece material.In the process that the material that is come out by centrifugation glides along first screen cloth, 22 surperficial spirals, the material that meets crushing granularity requirement passes first screen cloth 22 and is slipped in the surge bunker 19 of centrifugal crusher bottom along blanking awl 28, and fail to pass the material of first screen cloth 22 when being slipped to the bottom of first screen cloth 22, flow into mozzle 20, carried by the high-speed mixing air-flow in the pipeline, rush at impeller 23 once more, circulation so repeatedly is crushed to up to the piece material and can passes first screen cloth 22 and all enter in the surge bunker 19.Mozzle 20 with the junction of first screen cloth 22 above tube wall have annular mouth, so that the piece material can turn back in the mozzle 20, injector 21 is installed below the junction, the effect of injector 21 is by changing overflow section, improve the gaseous mixture flow velocity, utilize the swabbing action of high velocity air that the lower space air pressure of blanking awl 28 is reduced, so can in centrifugal crusher 4, be formed with the forward circulation air-flow that is beneficial to screening process.
Shown in Fig. 5,6, impeller 23 be by just, secondary two groups of impellers lean against and combine.Enough overflow sections pass impeller and discharge centrifugal crusher 4 after separation hood 26 filters so that the air of gas, solid phase separation has to have eggplant shape through hole 32 between every adjacent two blades.In the lower end of separation hood 26, be provided with the little screen cloth identical, in order to hold back the lump material that does not meet granularity requirements with the order number of first screen cloth 22.Through the air that separation hood 26 is discharged return along dry pipeline the bottom of centrifugal crusher 4 with from surge bunker 19 in finished shattering process the ejector action of powder material by mixer-ejector 5 mix once more, continue dry run, and be airflow screening process creation fluidization condition.Self-feeder 18 in the outlet at bottom setting of surge bunker 19 is used to control the feed flow, makes the composition of mixed airflow relatively stable.
The effect of airflow shifting machine 11 is the gradings of carrying out product.As shown in Figure 3, mixed airflow enters airflow chamber 16 through airflow shifting machine 11 upper left interfaces, rush at screen cloth 15 with screen cloth 15 angled high speeds, its powder material that carries is because the granularity difference, successively held back by screen cloth 15 and glide along the screen cloth inclined-plane, the material that is slipped to screen bottom is delivered to classifying bunker 3 through drawing mechanism 17, thereby finishes the grading process of product.Because it is short that air-flow passes the time compole of airflow shifting machine, a large amount of materials will be held back by first order screen cloth, cause the classification rate of product lower, for this reason, at the airflow screening motor spindle, establish before the ground floor screen cloth and return blowing device 14, return blowing device 14 and play air-supply and distributing gas.Return the air-introduced machine 1 that blowback air-flow in the blowing device 14 and power come from exhaust duct 13 ends, return blowing device 14 and be connected by returning blowing pipeline 2 with air-introduced machine 1.Return the material that blowing device 14 gets off landing on the screen cloth 15 and carry out blowback, this blowback air-flow will form local eddy airstream with mixed airflow, make material screening repeatedly before the ground floor screen cloth, thereby improve the grading rate.
The classification rate of control product has two kinds of approach: the one, and the amount of returning of blowing device air-flow is returned in control; The 2nd, the rotating speed of control spiral discharging machine 17: its discharging speed is directly proportional with its rotating speed, when reducing rotating speed, the speed of its convey materials descends, and the time of staying of material in the air-flow sieve will prolong, therefore the frequency that is separated once more by blowback is just high more, makes the classification of material more thorough.
Wherein, the setting of the number of plies of screen cloth 15 and order number can require to decide according to concrete grading.The dust laden air of realizing gas, solid two-phase secondary separation (separation process is for the first time carried out) in centrifugal crusher enters atmosphere along air draft pipeline 13 under the effect of air-introduced machine 1 after deduster 12 reclaims fine dusts.
In the present embodiment, the power of gas comes from air-introduced machine 1 and air blast 7 in the Pneumatic drying device, when the blast that provides when independent dependence air-introduced machine can satisfy the ventilation pressure loss of whole device, should preferentially select the mode of air inducing.When the air quantity of separate unit blower fan can not satisfy whole device demand, can take two typhoon machine parallel runnings.
If powder pneumatic conveying drying of the present utility model (or cooling) device is during the requiring of product-free grading, can be with the classifying bunker in the flow chart 13, mixer-ejector 5 and airflow shifting machine 11 cancellations, and deduster 12 directly is connected with the separation hood of centrifugal crusher 4, should suitably improve the separative efficiency of centrifugal crusher 4 this moment, its way is by variable frequency adjustment, improves the rotating speed of impeller 23.This moment, centrifugal crusher 4 all had the function of separator, and the surge bunker 19 of its underpart also can directly be done the feed bin use.
When material take other such as: during dried forms such as the calcining of straight fire, steam calcination, the utility model Pneumatic drying device also can be used as the air-flow cooling device and uses, and finishes the process integration of cooling, fragmentation and grading.When the utility model is used for the material cooling, only need remove the air preheater in the former drying device, cooling medium adopts the air under the environment temperature, has promptly constituted the air-flow cooling device.
Claims (9)
1. the Pneumatic drying device of a material, it is characterized in that comprising air inlet pipe (31), air preheater (8), dry pipeline (10), air draft pipeline (13) that is communicated with successively and the dynamical system that gas is flowed in above-mentioned pipeline, be connected with charger (9), material crusher respectively on the dry pipeline, dry pipeline segmentation connects charger, material crusher following current journey.
2. Pneumatic drying device according to claim 1, it is characterized in that described material crusher adopts centrifugal crusher (4), this centrifugal crusher comprises housing (27), lower housing portion is the surge bunker (19) that is used for the splendid attire material, surge bunker is communicated with dry pipeline (10) back segment, the mozzle (20) that communicates with dry pipeline leading portion is arranged in the housing, draft tube outlets end top is provided with rotatable impeller (23), impeller top is provided with can be for the separation hood (26) that passes through with gas after caking materials separates, and separation hood is communicated with dry pipeline back segment.
3. Pneumatic drying device according to claim 2 is characterized in that the impeller below is provided with first screen cloth (22), and the bottom of first screen cloth joins with mozzle (20) and is communicated with, and the big I of the mesh of first screen cloth is decided according to the granularity demand of fragmentation.
4. Pneumatic drying device according to claim 3, it is characterized in that on the mozzle (20) of first screen cloth (22) bottom the injector (21) that improves air-flow velocity being housed also, first screen cloth below is provided with the blanking awl (28) that bootable material enters surge bunker (19).
5. Pneumatic drying device according to claim 3, the bottom that it is characterized in that separation hood (26) is provided with the little screen cloth that can hold back the lump material that does not meet granularity requirements, and the mesh size of little screen cloth is consistent with the mesh size of first screen cloth (22) of described impeller below.
6. Pneumatic drying device according to claim 2 is characterized in that the bottom of surge bunker (19) is communicated with separation hood (26) by dry pipeline, and the self-feeder (18) of control mass flow also is equipped with at this place.
7. Pneumatic drying device according to claim 2, it is characterized in that described impeller (23) comprises positive impeller (29) and accessory impeller (30), positive impeller and accessory impeller are set up dorsad, positive impeller face is to the draft tube outlets end, accessory impeller is located at the back side of positive impeller, impeller comprises the blade of a plurality of swirling flow types, is provided with eggplant shape through hole (32) between every two adjacent blades.
8. Pneumatic drying device according to claim 1 is characterized in that also being connected with the airflow shifting machine (11) that is used for material is carried out grading on the material crusher dry pipeline afterwards.
9. Pneumatic drying device according to claim 8, it is characterized in that described airflow shifting machine (11) comprises returns blowing device (14), airflow chamber (16) and drawing mechanism (17), needs according to grading in the airflow chamber can be provided with one or more layers screen cloth (15), drawing mechanism is located at the bottom of each layer screen cloth, the drawing mechanism bottom can be connected to classifying bunker (3), returns blowing device and is located at before the ground floor screen cloth and is communicated with air draft pipeline (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201540055U CN201081521Y (en) | 2007-05-22 | 2007-05-22 | Air flow drying device for material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201540055U CN201081521Y (en) | 2007-05-22 | 2007-05-22 | Air flow drying device for material |
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| CN201081521Y true CN201081521Y (en) | 2008-07-02 |
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| CN103575084A (en) * | 2013-11-22 | 2014-02-12 | 盐城市科行富仕机械制造有限公司 | Airflow jetting box |
| CN103575067A (en) * | 2013-11-22 | 2014-02-12 | 盐城市科行富仕机械制造有限公司 | Efficient vertical type suspension parallel flow dryer |
| CN103697662A (en) * | 2013-12-31 | 2014-04-02 | 昆明田康科技有限公司 | Equipment with airflow drying and airflow screening functions |
| CN104941758A (en) * | 2015-06-16 | 2015-09-30 | 顾广才 | Efficient energy-saving crusher for ceramic production |
| CN105500551A (en) * | 2016-01-30 | 2016-04-20 | 黄利文 | Chemical equipment for efficiently preparing resin particles |
| CN107008555B (en) * | 2017-05-27 | 2022-12-13 | 鹤山市鸿盛石场有限公司 | Raw materials cornmill |
| CN107008555A (en) * | 2017-05-27 | 2017-08-04 | 湖北冠泰建材有限公司 | A kind of raw material flour mill |
| CN109489374A (en) * | 2018-11-22 | 2019-03-19 | 华电电力科学研究院有限公司 | A kind of dry collection system of flyash heat pump cycle and method |
| CN110064528A (en) * | 2019-05-07 | 2019-07-30 | 中国矿业大学 | A kind of dry method upgrading system and method for upgrading for dried, classified mineral |
| CN110160351A (en) * | 2019-06-05 | 2019-08-23 | 太仓塑料助剂厂有限公司 | The classification drying system of cumyl peroxide |
| CN111623621A (en) * | 2019-10-02 | 2020-09-04 | 祝磊 | Grain drying process capable of performing multiple drying |
| CN110833808A (en) * | 2019-12-07 | 2020-02-25 | 湖南圣人防水材料有限公司 | Waterproof coating reaction kettle adapting to different reaction requirements and adjusting stirring speed |
| CN115365227A (en) * | 2022-08-18 | 2022-11-22 | 浙江省海洋水产研究所 | Rotation type fishhook cleaning device is angled to hairtail longline |
| CN115365227B (en) * | 2022-08-18 | 2023-09-08 | 浙江省海洋水产研究所 | Rotary fishhook cleaning device for hairtail longline |
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