CN208611811U - A kind of spray drying system - Google Patents

Abstract

The utility model relates to a kind of spray drying systems, including spray drying tower and air-introduced machine, spray drying tower includes equal wind section from top to bottom, tower epicone, cylinder and lower cone, the side wall of equal wind section is connected with tower body hot-blast main, the side wall of tower epicone is connected with feed liquid pipe, the inner termination of feed liquid pipe is connected with feed liquid atomizing device, feed liquid atomizing device is located on the axis of cylinder, the lower end of cylinder is connected with tower body air-exhausting duct, the lower port of lower cone is equipped with finished product outlet valve, the cylinder collector ring for the stream that can at least emanate together in the case where cylinder inboard wall forms ring-type is installed on the cylinder circumference of spray drying tower, cylinder collector ring and cylinder coaxial line, the lateral wall of cylinder collector ring is connected with cylinder collector ring blast pipe, multiple temperature gradients are formed in tower body from top to bottom.Fresh air is preheated after tower body air draft is purified, pre- hot wind enters cylinder collector ring blast pipe.The spray drying system can avoid that wall sticking phenomenon, and online alternating temperature control occurs, and product yield is high, quality is good.

Description

A kind of spray drying system

Technical field

The utility model relates to a kind of drying device, in particular to a kind of spray drying system belongs to spray drying device Technical field.

Background technique

It is used for the spray drying device of additive, pesticide, food processing field in the prior art, common form to be one Tubular tower body, by equal wind section, tower epicone, cylinder, lower cone, feed liquid atomizing device, tower body tower body air-exhausting duct and finished product outlet valve Composition.Dry-heat air enters tower epicone through homogenating plate by equal wind section, flows downward under graviational interaction outside tower body air-exhausting duct, stream It is discharged after cylinder from the tower body air-exhausting duct of tower body lower part.Feed liquid is atomized through feed liquid atomizing device under the action of pressure pump and sprays into In tower, the little particle and hot wind of atomization carry out hot and humid area, complete moisture evaporation, and run down with dry-heat air, go to remove water The material divided enters lower cone, is then discharged from the finished product outlet valve of lower cone bottom.

This spray tower is in actual motion, because the factors such as feed pressure variation, feed liquid atomizing device abrasion will cause material The range of atomized flow of liquid changes, and atomized drop is made to deviate design section, random motion.The fluctuation of external gravitation simultaneously, The equal wind of aerofoil is ineffective, causes hot wind changes in distribution, and hot-air flow is also made turbulent condition occur, and the two superposition will appear heat The range of injection can not cover the range of atomising device feed liquid atomization under wind direction, cause drying effect bad, and material moisture is uneven It is even, while the little particle for occurring much being atomized can float onto tower body wall, cause viscous wall；The wall adhering quantity of some materials can reach 10% Left and right.The yield for influencing product first, causes very huge economic loss；Secondly the material of viscous wall is since long-time is in dry ring In border, moisture content is lower than normal material, is easy cooked-on；Color also difference can occur with normal material, and the lasting viscous wall of superposition is easy Agglomeration will affect the quality of normal material once viscous wall material is fallen off.In addition, each production cycle terminates, it is required to pair Drying tower is cleaned, and viscous wall causes cleaning amount big and the treating capacity of cleaning waste water is also bigger, is improved production cost, is increased The risk of pollution environment is added.

Some designers are in design, in order to reduce the wall adhering quantity of material, increase tower body barrel dliameter intentionally, drop can not be arrived Up to inner wall.The diameter of tower generally reaches several meters, even tens meters or more of height, virtually increases manufacturing cost, also increases Transport the difficulty of installation.And it could be without impinging on barrel, drop to certain value to the velocity attenuation in barrel direction after drop ejection Speed is influenced by feed pressure, spray orifice size, is a continually changing numerical value, spray tower currently on the market in spite of increasing Barrel dliameter is added, the phenomenon being stained on barrel can not be avoided droplets from.

The energy consumption of spray tower is larger at present, is mainly pursuing dry tenacity simultaneously, exhaust emissions temperature is also higher, usually At 70~90 DEG C, some high temperature drying exhaust emissions temperature are higher, and the heat discharged in most cases accounts for always drying heat 50% or more, cause great energy waste.

Utility model content

The purpose of this utility model is that overcoming problems of the prior art, a kind of spray drying system is provided, it is real Existing air-flow is controllable, divides dry warm area, can avoid that material wall sticking phenomenon occurs, online alternating temperature control improves product yield and product Matter.

In order to solve the above technical problems, a kind of spray drying system of the utility model, including spray drying tower and air inducing Machine, spray drying tower include being sequentially connected from top to bottom and equal wind section, tower epicone, cylinder and the lower cone of coaxial line, it is described The side wall of wind section is connected with tower body hot-blast main, and the side wall of the tower epicone is connected with feed liquid pipe, the inner termination of the feed liquid pipe It is connected with feed liquid atomizing device, the feed liquid atomizing device is located on the axis of cylinder, and the lower end of the cylinder is connected with tower body Air-exhausting duct, the external end head of the tower body air-exhausting duct are connected by purifying classifying equipoment with the entrance of the air-introduced machine, the lower cone The lower port of body is equipped with finished product outlet valve, and being equipped on the cylinder circumference of the spray drying tower at least together can be in cylinder Wall forms under ring-type the cylinder collector ring for stream of emanating, the cylinder collector ring and cylinder coaxial line, the cylinder collector ring it is outer Side wall is connected with cylinder collector ring blast pipe.

Compared with the existing technology, the utility model achieves following the utility model has the advantages that feed liquid enters in tower epicone from feed liquid pipe, It is atomized and sprays from feed liquid atomizing device, form a conical jet area；Dry-heat air enters equal wind section, warp from tower body hot-blast main It is sprayed into tower after evenly distributing, during flowing downward, dry-heat air and atomized drop carry out hot and humid area, take away in drop Moisture, particles fall is formed after droplet drying into lower cone, by finished product outlet valve discharge tower body outside；Drawing containing wet hot wind Under the effect of blower suction force, cleaning equipment is discharged to from tower body air-exhausting duct.In the process, another a blast of hot air is from collector ring blast pipe It into collector ring, emanates under formation is cyclic annular and flows to lower injection, the speed for stream of emanating under cyclic annular is dry-heat air downstream rate Several times, while the liquid drop movement speed on the injection boundary formed after atomising device is atomized also greater than feed liquid, on the one hand under ring-type Stream of emanating is formed in cylinder inboard wall protects air film, blocks drop and dry material to touch barrel, prevents wall sticking phenomenon occur；It is another The high-speed downstream of stream of emanating under aspect is cyclic annular will form a cricoid fluerics, and pressure moves downward dry-heat air, controls The turbulent flow on dry-heat air boundary equally also forces the boundary of atomized drop no longer to be drifted, and realizes to dry gas stream, drop atomization Stream and dry material carry out equidirectional artificail commutation, as forcing to rejoin one's unit, and not by fluctuations such as dry-heat air, material spray pressure It influences.It is controllable that the utility model realizes air-flow, it is ensured that barrel is clean, improves product yield, greatly reduces switching kind When cleaning, reduce labor intensity, guarantee material not cross contamination.

As the improvement of the utility model, the outlet of the tower body air-exhausting duct is connected with the air inlet of purification classifying equipoment, The bottom of the purification classifying equipoment is equipped with fine powder material outlet valve, the air outlet and heat exchange of heat pipe of the purification classifying equipoment Hot side air inlet be connected, the hot side air outlet of the heat exchange of heat pipe is connected with the entrance of the air-introduced machine, and the heat pipe changes Be plugged with more heat pipes between the hot side and cold side of hot device, the cold side air inlet of the heat exchange of heat pipe communicated with atmosphere or with The outlet of air blower is connected, and the cold side air outlet of the heat exchange of heat pipe is connected with pre- hot air pipe, the outlet of the pre- hot air pipe It is connected with the cylinder collector ring blast pipe.Under the swabbing action of air-introduced machine, the damp and hot wind containing powder is arranged from tower body air-exhausting duct Out, it is separated into purification classifying equipoment, fine powder material is discharged from the fine powder material outlet valve of purification classifying equipoment bottom, clean Damp and hot wind is discharged from the air outlet of purification classifying equipoment, subsequently into the hot side air inlet of heat exchange of heat pipe, the heat absorption of opposite heat tube After Duan Fangre, the temperature of damp and hot wind is reduced, and flows out from the hot side air outlet of heat exchange of heat pipe, and air-introduced machine will contain humid air and be discharged into greatly Gas；The heat contained in damp and hot wind is recycled, and is carried out in the cold side of heat exchange of heat pipe to natural air by the heat release section of heat pipe Preheating, the air after preheating escapes and enter pre- hot air pipe from the cold side air outlet of heat exchange of heat pipe, then from pre- hot air pipe into Enter cylinder collector ring blast pipe.On the one hand this system passes through purification classifying equipoment can recycle the powder in damp and hot wind, On the other hand fresh air is preheated using the waste heat that damp and hot wind is discharged in spray drying tower itself, using the hot wind after preheating Stream of emanating is formed under ring-type into cylinder collector ring, forms protection air film in cylinder inboard wall, and dry heat is made by jet action Wind regularly flows downward；The waste heat in damp and hot wind can be recycled, the energy consumption of system is substantially reduced, realizes green circulatory production, The humidity that spray drying tower bottom can additionally be completely removed, improves the drying effect of spray drying tower.It emanates under ring-type stream Power can also be improved by the air blower of heat exchange of heat pipe cold side air inlet entirely from the swabbing action of air-introduced machine Air quantity and wind pressure.

The lower lumen of the tower epicone is equipped with to be formed under ring-type and emanate as a further improvement of the utility model, The tower epicone collector ring of stream, the tower epicone collector ring and cylinder coaxial line, the lateral wall of the tower epicone collector ring are connected with Tower epicone collector ring blast pipe.Collector ring is added above feed liquid atomizing device, forms relay with cylinder collector ring, makes to protect gas Film and the effect of artificail commutation are more preferable；Tower epicone collector ring blast pipe can use a wind regime with cylinder collector ring blast pipe, Can also respective independent air intake and dry-heat air mixing be used to adjust drying temperature spray drying tower is formed along short transverse Different humidity provinces, so that the temperature in quick-drying upper temp area is higher, the temperature in temperature of lower area is relatively low, is conducive to point Area is dry, adapts to different material, improves drying effect, guarantees materials quality.

The lower end of the cylinder is equipped with to be formed under ring-type and emanate under stream as a further improvement of the utility model, Cone collector ring, the lower cone collector ring and cylinder coaxial line, the lateral wall of the lower cone collector ring are connected with lower cone Collector ring blast pipe.Lower cone collector ring is added at the position that cylinder lower end is connect with lower cone, is connect with the formation of cylinder collector ring Power forms artificail commutation all standing.Lower cone collector ring blast pipe can rectify the temperature of wind lower than upper with independent air intake, lower cone Portion, can cool down finished particle while rectifying anti-sticking wall, more can guarantee quality, the moisture content of finished product, and advantageous In the drop temperature of control finished product, prevent finished product from getting damp again；And the inner wall downlink of lower cone rectification wind patch lower cone, favorably In pushing material particles to scroll down through until being discharged from finished product outlet valve, prevent finished particle from viscous wall also occur.

The cylinder collector ring includes annular roof plate, annular inboard plate and ring as a further improvement of the utility model, Shape outer panel, the annular inboard plate are connected to the inner edge of the annular roof plate and extend straight down, the annular outboard plate Be connected to the outer rim of the annular roof plate and extend downwardly, the lower end of the annular outboard plate slope inwardly and with annular inboard plate Lower end between formed circumferential weld air outlet.Annular roof plate, annular inboard plate and annular outboard plate are encircled into remaining envelope of lower ending opening The structure closed, the width of annular roof plate are greater than the width of circumferential weld air outlet, be conducive to cylinder collector ring inner cavity formed it is higher Static pressure, the speed for the stream that makes to emanate under the ring-type that circumferential weld air outlet sprays faster, protective effect to barrel and to inner cavity air-flow Injection it is stronger.

The cylinder is up-thin-low-thick Disjunction type variable section structure as a further improvement of the utility model, described The upper end of annular inboard plate of cylinder collector ring and the cylinder of top are smoothly connected or are extended downwardly by overhead cylinder, ring The lower part of shape outer panel is connected with the cylinder of lower section.Top cylinder is separated from each other with lower cylinder and the diameter of lower cylinder is big In top, the nested structure amplified section by section is formed；The inside of cylinder collector ring is extended downwardly by overhead cylinder, guarantees tower body Inner wall is not in protrusion, in order to avoid the top of protrusion generates ramming material, the range for stream of emanating under lower layer is cyclic annular is greater than upper layer, shape At relay.

The upper port diameter of the lower cone is greater than the lower port of the cylinder as a further improvement of the utility model, Diameter, the lower cone collector ring include annular roof plate and annular outboard plate, and the inner edge of the annular roof plate is vertically connected on cylinder On the outer wall of body, the upper end of the annular outboard plate is vertically connected on the outer rim of the annular roof plate and extends downwardly, the ring The lower end of shape outer panel slopes inwardly and the formation circumferential weld air outlet between the lower end outer wall of cylinder, under the annular outboard plate Portion is connected with the upper port of lower cone.Lower cone collector ring can also be using by annular roof plate, cylinder body outer wall and annular outboard Plate is encircled into closed cavity, and stream of emanating under cyclic annular is sprayed from circumferential weld air outlet to lower cone, prevents finished particle from gluing wall, is conducive to Finished product is discharged from finished product outlet valve in time.The upper port diameter of lower cone is greater than the lower port diameter of cylinder, so that lower cone is whole Ring is flowed in cylinder inboard wall without protrusion, in order to avoid ramming material, and form gas shield film and artificail commutation all standing.

The cylinder is up-thin-low-thick Disjunction type variable section structure as a further improvement of the utility model, described Cylinder collector ring or lower cone collector ring include annular roof plate, annular outboard plate and annular bottom plate, the inner edge of the annular roof plate It is connected on overhead cylinder outer wall, the upper end of the annular outboard plate is connected to the outer rim of the annular roof plate and prolongs straight down It stretches, the outer rim of the annular bottom plate is connected with the lower end of the annular outboard plate, the inner edge of the annular bottom plate and lower square tube The upper port of body is connected, and the lower end of overhead cylinder forms circumferential weld outlet air lower than the annular bottom plate and between the cylinder of lower section Mouthful.The another embodiment of cylinder collector ring or lower cone collector ring, by annular roof plate, cylinder body outer wall, annular outboard plate and Annular bottom plate is encircled into remaining closed structure of lower ending opening, and the width of annular interior cavity is greater than the width of circumferential weld air outlet, favorably Form higher static pressure in the inner cavity of collector ring, make from circumferential weld air outlet spray ring-type under emanate stream speed faster, to cylinder The protective effect of wall and stronger to the injection of inner cavity air-flow.Top cylinder and lower cylinder are separated from each other and the diameter of lower cylinder Greater than top, the nested structure amplified section by section is formed；The inside of cylinder collector ring is extended downwardly by overhead cylinder, guarantees tower Internal wall is not in protrusion, in order to avoid the top of protrusion generates ramming material, the range for stream of emanating under lower layer is cyclic annular is greater than upper layer, Form relay.

The pre- hot air pipe is connected with the entrance of collector ring hot-blast main as a further improvement of the utility model, institute State cylinder collector ring blast pipe, tower epicone collector ring blast pipe and/or lower cone collector ring blast pipe entrance and the rectification The outlet of ring hot-blast main is connected, the cylinder collector ring blast pipe, tower epicone collector ring blast pipe and/or lower cone collector ring Collector ring wind-supplying mouth is installed on blast pipe, is separately installed at each collector ring wind-supplying mouth and mends wind regulating valve.Using spray drying The waste heat that damp and hot wind is discharged in tower itself preheats fresh air, and the hot wind after preheating enters collector ring hot wind from pre- hot air pipe General pipeline, and then enter cylinder collector ring blast pipe, tower epicone collector ring blast pipe and lower cone collector ring blast pipe；On adjusting tower The opening size of cone rectification benefit wind regulating valve is adjustable to enter tower epicone collector ring blast pipe from tower epicone collector ring wind-supplying mouth Natural air quantity, adjust cylinder rectification and mend the opening size of wind regulating valve and adjustable enters cylinder from cylinder collector ring wind-supplying mouth The natural air quantity of collector ring blast pipe, the opening size for adjusting lower cone rectification benefit wind regulating valve are adjustable from lower cone rectification Ring wind-supplying mouth enters the natural air quantity of lower cone collector ring blast pipe；So use identical heat source, the cold wind with different proportion Mixing, so that it may the rectification wind of different temperatures is formed, so that spray drying tower forms different humidity provinces, top along short transverse The temperature of humidity province is higher, and the temperature in temperature of lower area is relatively low, is conducive to subregion drying, improves drying effect；Lower cone rectification The temperature of wind is minimum, can cool down to finished particle while rectifying anti-sticking wall, more can guarantee the quality, aqueous of finished product Rate, and be conducive to control the drop temperature of finished product, prevent finished product from getting damp again；And lower cone rectification wind patch lower cone is interior Wall downlink is conducive to push material particles to scroll down through until being discharged from finished product outlet valve, prevents finished particle from viscous wall also occur.

Detailed description of the invention

Fig. 1 is the flow chart of the utility model spray drying system embodiment one.

Fig. 2 is the flow chart of the utility model spray drying system embodiment two.

Fig. 3 is the structural schematic diagram of the utility model spray drying system.

Fig. 4 is the half sectional view of the first collector ring in Fig. 3.

Fig. 5 is the bottom view of Fig. 4.

Fig. 6 is the half sectional view of second of collector ring in Fig. 3.

In figure: 1. spray drying towers；The equal wind section of 1a.；1b. tower epicone；1c. cylinder；1d. lower cone；1e. feed liquid atomization dress It sets；1f. finished product outlet valve；1g. cylinder collector ring；1g1. annular roof plate；1g2. annular inboard plate；1g3. annular outboard plate； 1g4. circumferential weld air outlet；1g5. annular bottom plate；1h. tower epicone collector ring；1j. lower cone collector ring；2. heating device；2a. adds Thermal wind-supplying mouth；3. purifying classifying equipoment；3a. fine powder material outlet valve；4. heat exchange of heat pipe；4a. hot side air inlet；4b. heat Side air-out mouth；4c. heat pipe；The cold side 4d. air inlet；The cold side 4e. air outlet；5. air-introduced machine；G1. tower body hot-blast main；G2. feed liquid Pipe；G3. tower body air-exhausting duct；G4. collector ring hot-blast main；G5. pre- hot air pipe；G6. tower epicone collector ring blast pipe；G6a. on tower Bore collector ring wind-supplying mouth；G7. cylinder collector ring blast pipe；G7a. cylinder collector ring wind-supplying mouth；G8. lower cone collector ring is entered the wind Pipe；G8a. lower cone collector ring wind-supplying mouth.

Specific embodiment

As shown in Figures 1 to 6, the spray drying system of the utility model includes spray drying tower 1 and air-introduced machine 5, is sprayed Drying tower 1 includes being sequentially connected from top to bottom and equal wind section 1a, tower epicone 1b, cylinder 1c and the lower cone 1d of coaxial line, equal wind The side wall of section 1a is connected with tower body hot-blast main G1, and the side wall of tower epicone 1b is connected with feed liquid pipe G2, the inner termination of feed liquid pipe G2 It is connected with feed liquid atomizing device 1e, feed liquid atomizing device 1e is located on the axis of cylinder 1c, and the lower end of cylinder 1c is connected with tower body Air-exhausting duct G3, the inner termination of tower body air-exhausting duct G3 can extend to tubular axis and port is turned round downwards, tower body air-exhausting duct G3's External end head is connected with the entrance of air-introduced machine 5, and the lower port of lower cone 1d is equipped with finished product outlet valve 1f, the cylinder of spray drying tower 1 The cylinder collector ring 1g, cylinder collector ring 1g of the stream that can at least emanate together in the case where cylinder inboard wall forms ring-type are installed on body circumference With cylinder 1c coaxial line, the lateral wall of cylinder collector ring 1g is connected with cylinder collector ring blast pipe G7.

Feed liquid enters in tower epicone 1b from feed liquid pipe G2, is atomized and sprays from feed liquid atomizing device 1e, forms a tapered injection Penetrate area；Dry-heat air enters equal wind section 1a from tower body hot-blast main G1, sprays into tower after evenly distributing, in the process of flowing downward In, dry-heat air and atomized drop carry out hot and humid area, take away the moisture in drop, form particles fall after droplet drying and arrive down In cone 1d, it is discharged outside tower body by finished product outlet valve 1f；Containing wet hot wind under the effect of 5 suction force of air-introduced machine, from tower body air draft Pipe G3 is discharged to cleaning equipment.In the process, another a blast of hot air enters in collector ring from collector ring blast pipe, is formed under ring-type and is penetrated Air-flow sprays downwards, and the speed for stream of emanating under cyclic annular is the several times of dry-heat air downstream rate, while also greater than feed liquid through being atomized The liquid drop movement speed on the injection boundary formed after device atomization, stream of on the one hand emanating under ring-type is formed in cylinder 1c inner wall to be protected Air film blocks drop and dry material to touch barrel, prevents wall sticking phenomenon occur；On the other hand it emanates under ring-type under the high speed of stream Guild forms a cricoid fluerics, and pressure moves downward dry-heat air, controls the turbulent flow on dry-heat air boundary, equally It forces the boundary of atomized drop no longer to be drifted, realizes and equidirectional pressure is carried out to dry gas stream, drop atomized flow and dry material Rectification as forcing to rejoin one's unit, and is not influenced by fluctuations such as dry-heat air, material spray pressure.The utility model realizes gas Stream is controllable, it is ensured that barrel is clean, improves product yield, greatly reduces cleaning when switching kind, it is strong to mitigate labour Degree guarantees material not cross contamination.

The outlet of tower body air-exhausting duct G3 is connected with the air inlet of purification classifying equipoment 3, and purification classifying equipoment 3 can be using rotation The bottom of wind separator, bag filter or other similar devices, purification classifying equipoment 3 is equipped with fine powder material outlet valve 3a, only The air outlet for changing classifying equipoment 3 is connected with the hot side air inlet 4a of heat exchange of heat pipe 4, the hot side air outlet 4b of heat exchange of heat pipe 4 It is connected with the entrance of air-introduced machine 5, more heat pipe 4c is plugged between the hot side and cold side of heat exchange of heat pipe 4, heat exchange of heat pipe 4 Cold side air inlet 4d is communicated with atmosphere or is connected with the outlet of air blower, the cold side air outlet 4e of heat exchange of heat pipe 4 and preheating Air hose G5 is connected, and the primary outlet of pre- hot air pipe G5 is connected with the entrance of cylinder collector ring blast pipe G7.

Under the swabbing action of air-introduced machine 5, the damp and hot wind containing powder is discharged from tower body air-exhausting duct G3, sets into purification classification Standby 3 are separated, and fine powder material is from the fine powder material outlet valve 3a discharge of purification 3 bottom of classifying equipoment, and clean damp and hot wind is from purification The air outlet of classifying equipoment 3 is discharged, subsequently into the endotherm section heat release of hot side the air inlet 4a, opposite heat tube 4c of heat exchange of heat pipe 4 Afterwards, the temperature of damp and hot wind reduces, and flows out from the hot side air outlet 4b of heat exchange of heat pipe 4, and air-introduced machine 5 will contain humid air and be discharged into greatly Gas；The heat contained in damp and hot wind is recycled, by heat pipe 4c heat release section the cold side of heat exchange of heat pipe 4 to natural air into Row preheating, the air after preheating escapes and enter pre- hot air pipe G5 from the cold side air outlet 4e of heat exchange of heat pipe 4, subsequently into cylinder Body collector ring blast pipe G7.On the one hand this system passes through purification classifying equipoment 3 can recycle the powder in damp and hot wind, separately On the one hand fresh air is preheated using the waste heat that damp and hot wind itself is discharged in spray drying tower 1, using the hot wind after preheating Stream of emanating is formed under ring-type into cylinder collector ring 1g, forms protection air film in cylinder 1c inner wall, and make to do by jet action Scorching wind regularly flows downward；The waste heat in damp and hot wind can be recycled, the energy consumption of system is substantially reduced, it additionally can be complete The humidity of 1 bottom of spray drying tower is removed, the drying effect of spray drying tower 1 is improved.The power of stream is emanated under ring-type can be complete Entirely from the swabbing action of air-introduced machine 5, air quantity and wind pressure can also be improved by the air blower of cold side air inlet 4d.

Pre- hot air pipe G5 is also connected with the air inlet of heating device 2, and the air after preheating enters heating from pre- hot air pipe G5 The air inlet of device 2, natural wind enter heating device 2 from heating device wind-supplying mouth 2a, common heated rear as dry-heat air Into tower body hot-blast main G1.

The lower lumen of tower epicone 1b is equipped with the tower epicone collector ring 1h that can form stream of emanating under ring-type, the rectification of tower epicone Ring 1h and cylinder 1c coaxial line, the lateral wall of tower epicone collector ring 1h are connected with tower epicone collector ring blast pipe G6.In feed liquid mist Makeup sets and adds collector ring above 1e, forms relay with cylinder collector ring 1g, makes to protect the effect of air film and artificail commutation more preferable； Tower epicone collector ring blast pipe G6 can with cylinder collector ring blast pipe G7 use a wind regime, can also respective independent air intake, Being used to adjust drying temperature with dry-heat air mixing makes spray drying tower 1 form different humidity provinces along short transverse, so that The temperature in quick-drying upper temp area is higher, and the temperature in the temperature of lower area of shaping area is relatively low, is conducive to subregion drying, fits Different material is answered, drying effect is improved, guarantees materials quality.

The lower end of cylinder 1c be equipped with can be formed lower cone the collector ring 1j, lower cone collector ring 1j of stream of emanating under ring-type with Cylinder 1c coaxial line, the lateral wall of lower cone collector ring 1j are connected with lower cone collector ring blast pipe G8.The lower end cylinder 1c with The position of lower cone 1d connection adds lower cone collector ring 1j, forms relay with cylinder collector ring 1g, forms artificail commutation and covers entirely Lid.Lower cone collector ring blast pipe G8 can be with independent air intake, can also be with tower epicone collector ring blast pipe G6 or cylinder collector ring Blast pipe G7 uses a wind regime, and the temperature that lower cone rectifies wind is lower than top, can be to finished product while rectifying anti-sticking wall Grain is cooled down, and more can guarantee quality, the moisture content of finished product, and is conducive to control the drop temperature of finished product, prevents finished product from going out Now get damp again；And lower cone rectification wind patch lower cone 1d inner wall downlink, be conducive to push material particles scroll down through until from Finished product outlet valve 1f discharge, prevents finished particle from viscous wall also occur.

As shown in Figure 4, Figure 5, cylinder collector ring 1g includes annular roof plate 1g1, annular inboard plate 1g2 and annular outboard plate 1g3, annular inboard plate 1g2 are connected to the inner edge of annular roof plate 1g1 and extend straight down, and annular outboard plate 1g3 is connected to ring It the outer rim of shape top plate 1g1 and extends downwardly, the lower end of annular outboard plate 1g3 slopes inwardly and the lower end with annular inboard plate 1g2 Between formed circumferential weld air outlet 1g4.Annular roof plate 1g1, annular inboard plate 1g2 and annular outboard plate 1g3 are encircled into lower ending opening Remaining closed structure, the width of annular roof plate 1g1 are greater than the width of circumferential weld air outlet 1g4, are conducive to cylinder collector ring 1g's Inner cavity forms higher static pressure, the speed for the stream that makes to emanate under the ring-type that circumferential weld air outlet 1g4 sprays faster, protection to barrel It acts on and stronger to the injection of inner cavity air-flow.

Cylinder 1c is up-thin-low-thick Disjunction type variable section structure, the upper end of the annular inboard plate 1g2 of cylinder collector ring 1g It is smoothly connected with the cylinder of top or is extended downwardly by overhead cylinder, the lower part of annular outboard plate 1g3 and the cylinder of lower section Body is connected.Top cylinder and lower cylinder are separated from each other and the diameter of lower cylinder is greater than top, and formation is amplified embedding section by section Nested structure；The inside of cylinder collector ring 1g is extended downwardly by overhead cylinder, guarantees that tower body inner wall is not in protrusion, with The top for exempting from protrusion generates ramming material, and the range for stream of emanating under lower layer is cyclic annular is greater than upper layer, forms relay.

The upper port diameter of lower cone 1d is greater than the lower port diameter of cylinder, and lower cone collector ring 1j includes annular roof plate 1g1 and annular outboard plate 1g3, the inner edge of annular roof plate 1g1 are vertically connected on the outer wall of cylinder 1c, annular outboard plate 1g3's Upper end is vertically connected on the outer rim of annular roof plate 1g1 and extends downwardly, and the lower end of annular outboard plate 1g3 slopes inwardly and and cylinder Circumferential weld air outlet 1g4 is formed between the lower end outer wall of 1c, the lower part of annular outboard plate 1g3 is connected with the upper port of lower cone 1d It connects.Lower cone collector ring 1j can also be closed using being encircled by annular roof plate 1g1, cylinder body outer wall and annular outboard plate 1g3 Cavity, stream of emanating under cyclic annular are sprayed from circumferential weld air outlet 1g4 to lower cone 1d, prevent finished particle from gluing wall, it is timely to be conducive to finished product It is discharged from finished product outlet valve 1f.The upper port diameter of lower cone 1d is greater than the lower port diameter of cylinder 1c, so that lower cone rectifies Ring 1j without protrusion, in order to avoid ramming material, and forms gas shield film and artificail commutation all standing in cylinder 1c inner wall.

As shown in fig. 6, the another embodiment of cylinder collector ring 1g or lower cone collector ring 1j, cylinder 1c be it is upper it is thin under Thick Disjunction type variable section structure, cylinder collector ring 1g or lower cone collector ring 1j include annular roof plate 1g1, annular outboard plate 1g3 and annular bottom plate 1g5, the inner edge of annular roof plate 1g1 are connected on overhead cylinder outer wall, and the upper end of annular outboard plate 1g3 connects It connects the outer rim in annular roof plate 1g1 and extends straight down, the outer rim and the lower end phase of annular outboard plate 1g3 of annular bottom plate 1g5 Connection, the inner edge of annular bottom plate 1g5 are connected with the upper port of lower section cylinder, and the lower end of overhead cylinder is lower than annular bottom plate 1g5 And circumferential weld air outlet 1g4 is formed between the cylinder of lower section.By annular roof plate 1g1, cylinder body outer wall, annular outboard plate 1g3 and annular Bottom plate 1g5 is encircled into remaining closed structure of lower ending opening, and the width of annular interior cavity is greater than the width of circumferential weld air outlet 1g4, has Form higher static pressure conducive to the inner cavity of collector ring, make from circumferential weld air outlet 1g4 spray ring-type under emanate stream speed faster, Protective effect to barrel and stronger to the injection of inner cavity air-flow.Top cylinder and lower cylinder are separated from each other and lower cylinder Diameter is greater than top, forms the nested structure amplified section by section；The inside of cylinder collector ring 1g is extended downwardly by overhead cylinder, Guarantee that tower body inner wall is not in protrusion, in order to avoid the top of protrusion generates ramming material, the range for stream of emanating under lower layer is cyclic annular is big In upper layer, relay is formed.

Pre- hot air pipe G5 is connected with the entrance of collector ring hot-blast main G4, cylinder collector ring blast pipe G7, the rectification of tower epicone The entrance of ring blast pipe G6 and lower cone collector ring blast pipe G8 are connected with the outlet of collector ring hot-blast main G4, cylinder collector ring Cylinder collector ring wind-supplying mouth G7a is installed on blast pipe G7, cylinder rectification is installed at cylinder collector ring wind-supplying mouth G7a and mends wind tune Valve is saved, tower epicone collector ring wind-supplying mouth G6a, tower epicone collector ring wind-supplying mouth G6a are installed on tower epicone collector ring blast pipe G6 Place is equipped with the rectification of tower epicone and mends wind regulating valve, is equipped with lower cone collector ring wind-supplying mouth on lower cone collector ring blast pipe G8 Lower cone rectification is installed at G8a, lower cone collector ring wind-supplying mouth G8a and mends wind regulating valve.

Fresh air is preheated using the waste heat that damp and hot wind itself is discharged in spray drying tower 1, the hot wind after preheating from Pre- hot air pipe G5 enters collector ring hot-blast main G4, and then enters cylinder collector ring blast pipe G7, tower epicone collector ring blast pipe G6 and lower cone collector ring blast pipe G8；The opening size that wind regulating valve is mended in the rectification of adjusting tower epicone is adjustable whole from tower epicone Stream ring wind-supplying mouth G6a enters the natural air quantity of tower epicone collector ring blast pipe G6, adjusts the aperture that wind regulating valve is mended in cylinder rectification The adjustable natural air quantity for entering cylinder collector ring blast pipe G7 from cylinder collector ring wind-supplying mouth G7a of size adjusts lower cone The opening size of rectification benefit wind regulating valve is adjustable to enter lower cone collector ring blast pipe from lower cone collector ring wind-supplying mouth G8a The natural air quantity of G8；Identical heat source is so used, is mixed with the cold wind of different proportion, so that it may form the rectification of different temperatures Wind, so that spray drying tower 1 forms different humidity provinces along short transverse, the temperature in upper temp area is higher, temperature of lower area Temperature it is relatively low, it is dry to be conducive to subregion, improves drying effect；The temperature that lower cone rectifies wind is minimum, rectifies the same of anti-sticking wall When finished particle can be cooled down, more can guarantee quality, the moisture content of finished product, and be conducive to control finished product go out material temperature Degree, prevents finished product from getting damp again；And lower cone rectification wind patch lower cone 1d inner wall downlink, be conducive to push material particles to It is lower to roll until preventing finished particle from viscous wall also occur from finished product outlet valve 1f discharge.

The foregoing is merely the preferable possible embodiments of the utility model, patent that is non-therefore limiting to the utility model Protection scope.In addition to the implementation, the utility model can also have other embodiments.It is all to use equivalent replacement or equivalent change The technical solution to be formed is changed, is all fallen in the protection scope of the requires of the utility model.Technology of the utility model without description is special Sign can realize that details are not described herein by or using the prior art.

Claims (9)

1. a kind of spray drying system, including spray drying tower and air-introduced machine, spray drying tower includes being sequentially connected from top to bottom And equal wind section, tower epicone, cylinder and the lower cone of coaxial line, the side wall of the equal wind section is connected with tower body hot-blast main, described The side wall of tower epicone is connected with feed liquid pipe, and the inner termination of the feed liquid pipe is connected with feed liquid atomizing device, the feed liquid atomization dress Setting on the axis of cylinder, the lower end of the cylinder is connected with tower body air-exhausting duct, and the external end head of the tower body air-exhausting duct passes through Purification classifying equipoment is connected with the entrance of the air-introduced machine, and the lower port of the lower cone is equipped with finished product outlet valve, feature It is: the cylinder for the stream that can at least emanate together in the case where cylinder inboard wall forms ring-type is installed on the cylinder circumference of the spray drying tower Body collector ring, the cylinder collector ring and cylinder coaxial line, the lateral wall of the cylinder collector ring be connected with cylinder collector ring into Air hose.

2. spray drying system according to claim 1, it is characterised in that: the outlet and purification point of the tower body air-exhausting duct The air inlet of grade equipment is connected, and the bottom of the purification classifying equipoment is equipped with fine powder material outlet valve, the purification classifying equipoment Air outlet be connected with the hot side air inlet of heat exchange of heat pipe, the hot side air outlet of the heat exchange of heat pipe and the air-introduced machine Entrance is connected, and is plugged with more heat pipes between the hot side and cold side of the heat exchange of heat pipe, the cold side of the heat exchange of heat pipe into Air port communicates with atmosphere or is connected with the outlet of air blower, the cold side air outlet of the heat exchange of heat pipe and pre- hot air pipe phase Even, the outlet of the pre- hot air pipe is connected with the cylinder collector ring blast pipe.

3. spray drying system according to claim 2, it is characterised in that: the lower lumen of the tower epicone is equipped with can Form the tower epicone collector ring for stream of emanating under ring-type, the tower epicone collector ring and cylinder coaxial line, the tower epicone collector ring Lateral wall be connected with tower epicone collector ring blast pipe.

4. spray drying system according to claim 3, it is characterised in that: the lower end of the cylinder, which is equipped with, can form ring It emanates under shape the lower cone collector ring of stream, the lower cone collector ring and cylinder coaxial line, the outside of the lower cone collector ring Wall is connected with lower cone collector ring blast pipe.

5. spray drying system according to any one of claim 1 to 4, it is characterised in that: the cylinder collector ring packet Annular roof plate, annular inboard plate and annular outboard plate are included, the annular inboard plate is connected to the inner edge of the annular roof plate and erects It directly extends downwardly, the annular outboard plate is connected to the outer rim of the annular roof plate and extends downwardly, the annular outboard plate Lower end slopes inwardly and forms circumferential weld air outlet between the lower end of annular inboard plate.

6. spray drying system according to claim 5, it is characterised in that: the cylinder is that up-thin-low-thick Disjunction type becomes Cross section structure, the upper end of annular inboard plate of the cylinder collector ring and the cylinder of top are smoothly connected or downward by overhead cylinder Extend, the lower part of annular outboard plate is connected with the cylinder of lower section.

7. spray drying system according to claim 4, it is characterised in that: the upper port diameter of the lower cone is greater than institute State the lower port diameter of cylinder, the lower cone collector ring includes annular roof plate and annular outboard plate, the annular roof plate it is interior Edge is vertically connected on the outer wall of cylinder, the upper end of the annular outboard plate be vertically connected on the outer rim of the annular roof plate and to The lower end of lower extension, the annular outboard plate slopes inwardly and forms circumferential weld air outlet between the lower end outer wall of cylinder, described The lower part of annular outboard plate is connected with the upper port of lower cone.

8. spray drying system according to claim 4, it is characterised in that: the cylinder is that up-thin-low-thick Disjunction type becomes Cross section structure, the cylinder collector ring or lower cone collector ring include annular roof plate, annular outboard plate and annular bottom plate, the ring The inner edge of shape top plate is connected on overhead cylinder outer wall, and the upper end of the annular outboard plate is connected to the outer rim of the annular roof plate And extend straight down, the outer rim of the annular bottom plate is connected with the lower end of the annular outboard plate, the annular bottom plate Inner edge is connected with the upper port of lower section cylinder, and the lower end of overhead cylinder is lower than the annular bottom plate and the shape between the cylinder of lower section At circumferential weld air outlet.

9. spray drying system according to claim 4, it is characterised in that: the pre- hot air pipe and collector ring hot-blast main Entrance be connected, the cylinder collector ring blast pipe, tower epicone collector ring blast pipe and/or lower cone collector ring blast pipe enter Mouthful be connected with the outlet of the collector ring hot-blast main, the cylinder collector ring blast pipe, tower epicone collector ring blast pipe and/or Collector ring wind-supplying mouth is installed on lower cone collector ring blast pipe, is separately installed at each collector ring wind-supplying mouth and mends wind regulating valve.