Acetylation spray drying equipment

Abstract

The invention relates to the technical field of material drying, in particular to acetylation spray drying equipment which is used for solving the problem that existing equipment is poor in drying effect. The equipment comprises a spraying mechanism, the spraying mechanism comprises a drying tower, a plurality of atomizing nozzles are arranged in the drying tower, an electric heating wire is arranged in the drying tower, a blowing mechanism is arranged at the bottom of the drying tower, when the temperature in the drying tower is low, the discharging amount of the atomizing nozzles is reduced, and the air volume of the blowing mechanism is increased, so that the suspension time of spraying is prolonged; when the temperature in the drying tower rises, the discharging amount of the atomizing nozzle is increased, and the air volume of the blowing mechanism is reduced, so that the spray drying amount is increased; the waiting time after the equipment is started is obviously shortened, the production efficiency is improved, and the problem that the drying effect is poor due to the fact that the internal temperature of the drying tower is unstable is effectively solved.

Description

Technical Field

[0001] The invention relates to the technical field of material drying, in particular to an acetylation spray drying device. Background Art

[0002] In the prior art, acetylation impurity removal mostly adopts solvent precipitation process, and the feed liquid needs to be dried to remove the solvent later. Spray drying technology can quickly eliminate the volume in the feed liquid. As an efficient and energy-saving drying method, spray drying technology is widely used in many fields such as food, chemical industry, and medicine. Spray drying equipment achieves rapid drying by atomizing liquid materials into tiny droplets and making them evaporate rapidly in hot air. However, traditional spray drying equipment still has some technical bottlenecks in practical applications, especially in the equipment startup stage and temperature control.

[0003] Traditional spray drying equipment usually includes a spray mechanism, which is mainly composed of a drying tower, an atomizing nozzle, and a heating wire. When the equipment is started, the heating wire or other heat source first heats the inside of the drying tower to raise the temperature inside the drying tower to a level suitable for spray drying. However, in the early stage of the drying tower, although the temperature can gradually rise, it often has not reached the optimal drying temperature. At this time, if the atomizing nozzle starts to spray, the drying effect of the spray may be affected due to insufficient temperature, resulting in unstable product quality. Summary of the invention

[0004] The invention provides an acetylation spray drying device to solve the problem that the existing device has poor drying effect.

[0005] In order to alleviate the above technical problems, the technical solution provided by the present invention is:

[0006] An acetylation spray drying device comprises a spray mechanism, wherein the spray mechanism comprises a drying tower, a plurality of atomizing nozzles are arranged in the drying tower, an electric heating wire is arranged in the drying tower, and a blower mechanism is arranged at the bottom of the drying tower, when the temperature in the drying tower is low, the discharge amount of the atomizing nozzle is reduced, and the air volume of the blower mechanism is increased to increase the suspension time of the spray; and when the temperature in the drying tower is increased, the discharge amount of the atomizing nozzle is increased, and the air volume of the blower mechanism is reduced to increase the drying amount of the spray.

[0007] Furthermore, the spray mechanism also includes a plurality of nozzles arranged in a circular array in the drying tower, and the plurality of atomizing nozzles are linearly arrayed in the plurality of nozzles respectively. The bottoms of the plurality of nozzles are commonly connected to an annular tube, the annular tube is connected to a supply pipe, and the supply pipe is connected to a booster pump. A temperature sensor is arranged in the drying tower, and when the temperature sensor detects that the temperature in the drying tower rises, the pump speed of the booster pump increases.

[0008] Furthermore, the spray mechanism also includes a steam discharge pipe and a material discharge hopper, the steam discharge pipe is connected to the top of the drying tower, the material discharge hopper is connected to the bottom of the drying tower, the bottom of the material discharge hopper is connected to a discharge pipe, and a discharge valve is provided on the discharge pipe.

[0009] Furthermore, the air blowing mechanism includes a fixed frame, a rotating shaft is connected to the middle of the fixed frame, and blades are connected to the rotating shaft. When the temperature sensor detects that the temperature in the drying tower increases, the air volume generated by the blades decreases.

[0010] Furthermore, the hair dryer mechanism also includes a rotating rod, which is fixedly connected to the blades and rotates on the side wall of the rotating shaft. When the rotating rod rotates, the angle of the blades changes to increase or decrease the air output.

[0011] Furthermore, the rotating rod is connected with a gear, and the rotating shaft is slidably connected with a rack meshing with the gear.

[0012] Furthermore, a mounting ring is slidably connected to the key on the rotating shaft, the rack is fixedly connected to the mounting ring, a swivel is rotatably connected to the mounting ring, an electric telescopic rod is connected to the inner wall of the drying tower, and the swivel is connected to the output end of the electric telescopic rod, when the temperature in the drying tower decreases, the electric telescopic rod extends to increase the blade angle and increase the air output, and when the temperature in the drying tower increases, the electric telescopic rod shortens to reduce the blade angle and reduce the air output.

[0013] Furthermore, it also includes a condensation mechanism, which includes a condensation tube sleeved on the steam exhaust pipe, and cold water flows inside the condensation tube.

[0014] Furthermore, the condenser is connected with a water inlet pipe and a water outlet pipe.

[0015] Furthermore, a water pump is connected to the water inlet pipe, and the pumping speed of the water pump increases when the temperature sensor detects that the temperature in the drying tower rises.

[0016] The beneficial effects of the present invention are analyzed as follows:

[0017] An acetylation spray drying device comprises a spray mechanism, which comprises a drying tower, a plurality of atomizing nozzles are arranged in the drying tower, an electric heating wire is arranged in the drying tower, and a blower mechanism is arranged at the bottom of the drying tower. When the temperature in the drying tower is low, the discharge amount of the atomizing nozzle is reduced, and the air volume of the blower mechanism is increased, thereby increasing the suspension time of the spray; and when the temperature in the drying tower is increased, the discharge amount of the atomizing nozzle is increased, and the air volume of the blower mechanism is reduced, thereby increasing the drying amount of the spray.

[0018] The interior of the drying tower is heated to increase the temperature inside the drying tower. When the temperature rises to a level sufficient to dry the spray, the atomizing nozzle is controlled to start. In the initial stage of the drying tower, although the temperature can reach the level of drying the spray, it has not yet risen to the required highest level. Therefore, the air volume of the blowing mechanism is relatively high, so that the spray sprayed into the drying tower can be suspended by the airflow for a longer time, thereby allowing the spray to be heated and dried in a diffused state. When the temperature in the drying tower rises to the required highest level, the spray volume of the atomizing nozzle increases, and the air volume of the blowing mechanism decreases to avoid a large amount of spray being blown out of the drying tower. At the same time, the drying tower after the internal temperature has risen can dry the incremental spray. Through the above-mentioned settings, the waiting time after the equipment is started is reduced, and the problem of poor drying effect caused by unstable temperature inside the drying tower due to external factors can be avoided. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the related technologies, the drawings required for use in the specific embodiments or the related technical descriptions will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a cross-sectional view of the present invention;

[0022] Figure 3 It is a structural schematic diagram of the nozzle of the present invention;

[0023] Figure 4 It is a structural schematic diagram of the hair dryer mechanism of the present invention;

[0024] Figure 5 It is a schematic diagram of the structure of the gear of the present invention;

[0025] Figure 6 It is a structural schematic diagram of the condensation mechanism of the present invention.

[0026] icon:

[0027] 100, spray mechanism; 110, drying tower; 120, steam discharge pipe; 130, material discharge bucket; 140, discharge pipe; 150, discharge valve; 160, nozzle; 170, atomizing nozzle; 180, annular pipe; 190, supply pipe; 191, booster pump; 200, blower mechanism; 210, fixing frame; 220, rotating shaft; 230, blade; 240, rotating rod; 250, gear; 260, rack; 270, mounting ring; 280, swivel; 290, electric telescopic rod; 300, condensation mechanism; 310, condensation pipe; 320, water inlet pipe; 330, water outlet pipe; 340, water pump. DETAILED DESCRIPTION

[0028] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] Examples, such as Figure 1-Figure 6As shown, an acetylation spray drying device includes a spray mechanism 100, the spray mechanism 100 includes a drying tower 110, a plurality of atomizing nozzles 170 are arranged in the drying tower 110, an electric heating wire is arranged in the drying tower 110, and a blower mechanism 200 is arranged at the bottom of the drying tower 110. When the temperature in the drying tower 110 is low, the discharge amount of the atomizing nozzle 170 is reduced, and the air volume of the blower mechanism 200 is increased, thereby increasing the suspension time of the spray; and, when the temperature in the drying tower 110 is increased, the discharge amount of the atomizing nozzle 170 is increased, and the air volume of the blower mechanism 200 is reduced, thereby increasing the drying amount of the spray.

[0032] The working mechanism of the drying equipment provided in this embodiment is:

[0033] The drying tower 110 is provided with a heat source inside. The heat source may be an electric heating wire or other heating equipment, such as gas heating. First, the drying tower 110 is heated inside to increase the temperature inside the drying tower 110. When the temperature rises to a level sufficient to dry the spray, the atomizing nozzle 170 is controlled to start. In the early stage of the drying tower 110, although the temperature can reach the level of drying the spray, the temperature has not yet risen to the required maximum level. Therefore, the air volume of the air blowing mechanism 200 is relatively high, so that the spray sprayed into the drying tower 110 can be suspended by the air flow. The time is increased, so that the spray can be heated and dried in a diffused state. When the temperature in the drying tower 110 rises to the required maximum, the spray volume of the atomizing nozzle 170 increases, and the air output of the blowing mechanism 200 decreases, so as to avoid a large amount of spray being blown out of the drying tower 110. At the same time, the drying tower 110 after the internal temperature is increased can dry the incremental spray. Through the above-mentioned settings, the waiting time after the equipment is started is reduced, and the problem of poor drying effect caused by the temperature instability caused by the influence of external factors on the drying tower 110 can be avoided.

[0034] Among the optional methods of this embodiment, the more preferred ones are:

[0035] The spray mechanism 100 also includes a plurality of nozzles 160 arranged in a circular array in the drying tower 110, and a plurality of atomizing nozzles 170 are respectively arranged linearly in the plurality of nozzles 160. The bottoms of the plurality of nozzles 160 are commonly connected to a circular pipe 180, the circular pipe 180 is connected to a supply pipe 190, and the supply pipe 190 is connected to a booster pump 191. A temperature sensor is arranged in the drying tower 110. When the temperature sensor detects that the temperature in the drying tower 110 rises, the pump speed of the booster pump 191 increases.

[0036] The supply pipe 190 is connected to the external material supply, the booster pump 191 is used to control the supply pressure of the material, and the temperature sensor in the drying tower 110 detects the temperature inside it. When the temperature in the drying tower 110 is low, the pump speed of the booster pump 191 decreases, and the material supply speed decreases at this time, and then the amount of material sprayed out of the atomizing nozzle 170 decreases. On the contrary, the pump speed of the booster pump 191 increases, so that the output of the atomizing nozzle 170 increases.

[0037] Among the optional methods of this embodiment, the more preferred ones are:

[0038] The spray mechanism 100 also includes a steam discharge pipe 120 and a material discharge hopper 130 . The steam discharge pipe 120 is connected to the top of the drying tower 110 . The material discharge hopper 130 is connected to the bottom of the drying tower 110 . The bottom of the material discharge hopper 130 is connected to a discharge pipe 140 . A discharge valve 150 is provided on the discharge pipe 140 .

[0039] After the material is dried in the drying tower 110, the moisture contained in the material turns into water vapor and is discharged from the steam discharge pipe 120, and the dried material falls into the material discharge hopper 130;

[0040] In order to avoid the influence of the blower mechanism 200 on the falling of the material, the blower mechanism 200 can be stopped after the supply of the atomizing nozzle 170 is stopped, so that the dried material can fall stably, and then the pressure pump 191 and the blower mechanism 200 are started.

[0041] Among the optional methods of this embodiment, the more preferred ones are:

[0042] The air blowing mechanism 200 includes a fixing frame 210, a rotating shaft 220 is connected to the middle of the fixing frame 210, and blades 230 are connected to the rotating shaft 220. When the temperature sensor detects that the temperature in the drying tower 110 increases, the air volume generated by the blades 230 decreases.

[0043] The number of the fixed frames 210 can be adaptively increased or decreased according to the size of the drying tower 110, and a plurality of fixed frames 210 are arranged in a circular array on the bottom side wall of the drying tower 110. The rotating shaft 220 is connected to the driving motor. When the rotating shaft 220 rotates, the blades 230 can be driven to rotate to generate air volume, so that the heat in the drying tower 110 is evenly distributed, while increasing the suspension time of the spray.

[0044] Among the optional methods of this embodiment, the more preferred ones are:

[0045] The hair dryer mechanism 200 further includes a rotating rod 240 , which is fixedly connected to the blades 230 . The rotating rod 240 rotates on the side wall of the rotating shaft 220 . When the rotating rod 240 rotates, the angle of the blades 230 changes to increase or decrease the air volume.

[0046] The blade 230 is connected to the rotating shaft 220 through the rotating rod 240. When the rotating rod 240 rotates relative to the rotating shaft 220, the angle of the blade 230 is changed, so that the air volume is increased or decreased. The maximum rotation angle of the blade 230 is forty-five degrees, which prevents the air volume from being reduced due to excessive rotation of the blade 230.

[0047] Among the optional methods of this embodiment, the more preferred ones are:

[0048] The rotating rod 240 is connected to a gear 250 , and the rotating shaft 220 is slidably connected to a rack 260 meshing with the gear 250 .

[0049] The gear 250 is coaxially connected to the rotating rod 240 , and the rack 260 meshing with the gear 250 can drive the gear 250 to rotate when sliding, so that the angle of the blade 230 is changed.

[0050] Among the optional methods of this embodiment, the more preferred ones are:

[0051] A mounting ring 270 is slidably connected to the rotating shaft 220, the rack 260 is fixedly connected to the mounting ring 270, a swivel 280 is rotatably connected to the mounting ring 270, an electric telescopic rod 290 is connected to the inner wall of the drying tower 110, and the swivel 280 is connected to the output end of the electric telescopic rod 290. When the temperature in the drying tower 110 decreases, the electric telescopic rod 290 extends to increase the angle of the blade 230 and increase the air output; and when the temperature in the drying tower 110 increases, the electric telescopic rod 290 shortens to reduce the angle of the blade 230 and reduce the air output.

[0052] A plurality of racks 260 are fixedly connected to the mounting ring 270, and the mounting ring 270 is slidably connected to the rotating shaft 220 by a key, so that the mounting ring 270 can rotate with the rotating shaft 220 and slide relative to the rotating shaft 220, so that the racks 260 can slide and stably mesh with the corresponding gears 250. When the temperature sensor detects that the temperature in the drying tower 110 is low, the electric telescopic rod 290 extends and pushes the mounting ring 270 to slide through the rotating ring 280, so that the rack 260 drives the gear 250 to rotate so that the angle of the blade 230 increases, and vice versa, the electric telescopic rod 290 shortens so that the air volume decreases. The setting of the rotating ring 280 enables the electric telescopic rod 290 to drive the mounting ring 270 to slide and prevents the rotation of the mounting ring 270 from being interfered with.

[0053] Regarding the structure of the condensing mechanism 300, specifically:

[0054] The condensing mechanism 300 includes a condensing tube 310 sleeved on the steam exhaust pipe 120 , and cold water flows inside the condensing tube 310 .

[0055] The condenser 310 is sleeved on the steam discharge pipe 120, and the cold water flowing inside the condenser 310 cools down the steam in the steam discharge pipe 120, so that the steam is condensed into water for discharge.

[0056] Among the optional methods of this embodiment, the more preferred ones are:

[0057] The condenser pipe 310 is connected to a water inlet pipe 320 and a water outlet pipe 330 .

[0058] The water inlet pipe 320 is connected to the cold water supply, and the water outlet pipe 330 discharges the cold water after heat exchange in the condenser tube 310, ensuring that cold water continues to flow in the condenser tube 310 to condense the solvent vapor.

[0059] Among the optional methods of this embodiment, the more preferred ones are:

[0060] The water inlet pipe 320 is connected to a water pump 340 , and when the temperature sensor detects that the temperature in the drying tower 110 increases, the pumping speed of the water pump 340 increases.

[0061] The water pump 340 is arranged on the water inlet pipe 320 to transport cold water to the condenser 310. When the temperature sensor detects that the temperature in the drying tower 110 increases, the material supply inside the drying tower 110 increases, thereby increasing the amount of solvent vapor generated. At this time, the pumping speed of the water pump 340 increases to ensure that the speed of cold water flowing in the condenser 310 increases, thereby increasing the supply speed of cold water and ensuring that a large amount of solvent vapor can be condensed.

[0062] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An acetylation spray drying device, comprising a spray mechanism (100), characterized in that: The spray mechanism (100) comprises a drying tower (110), wherein a plurality of atomizing nozzles (170) are arranged in the drying tower (110), wherein an electric heating wire is arranged in the drying tower (110), and a blower mechanism (200) is arranged at the bottom of the drying tower (110); when the temperature in the drying tower (110) is low, the discharge amount of the atomizing nozzle (170) is reduced, and the air volume of the blower mechanism (200) is increased, thereby increasing the suspension time of the spray; and, when the temperature in the drying tower (110) is increased, the discharge amount of the atomizing nozzle (170) is increased, and the air volume of the blower mechanism (200) is reduced, thereby increasing the drying amount of the spray.

2. The acetylation spray drying equipment according to claim 1, characterized in that: The spray mechanism (100) further comprises a plurality of nozzles (160) arranged in a circular array in the drying tower (110), a plurality of atomizing nozzles (170) respectively arranged in a linear array in the plurality of nozzles (160), the bottoms of the plurality of nozzles (160) being commonly connected to an annular tube (180), a supply tube (190) being connected to the annular tube (180), a booster pump (191) being connected to the supply tube (190), a temperature sensor being arranged in the drying tower (110), and when the temperature sensor detects that the temperature in the drying tower (110) rises, the pump speed of the booster pump (191) is increased.

3. The acetylation spray drying equipment according to claim 2, characterized in that: The spray mechanism (100) further comprises a steam discharge pipe (120) and a material discharge hopper (130), wherein the steam discharge pipe (120) is connected to the top of the drying tower (110), and the material discharge hopper (130) is connected to the bottom of the drying tower (110), and the bottom of the material discharge hopper (130) is connected to a discharge pipe (140), and a discharge valve (150) is provided on the discharge pipe (140).

4. The acetylation spray drying equipment according to claim 3, characterized in that: The air blowing mechanism (200) comprises a fixed frame (210), a rotating shaft (220) is connected to the middle of the fixed frame (210), a blade (230) is connected to the rotating shaft (220), and when the temperature sensor detects that the temperature in the drying tower (110) increases, the air volume generated by the blade (230) decreases.

5. The acetylation spray drying equipment according to claim 4, characterized in that: The hair dryer mechanism (200) further comprises a rotating rod (240), wherein the rotating rod (240) is fixedly connected to the blade (230), and the rotating rod (240) rotates on the side wall of the rotating shaft (220). When the rotating rod (240) rotates, the angle of the blade (230) changes to increase or decrease the air output.

6. The acetylation spray drying equipment according to claim 5, characterized in that: The rotating rod (240) is connected to a gear (250), and the rotating shaft (220) is slidably connected to a rack (260) meshing with the gear (250).

7. The acetylation spray drying equipment according to claim 6, characterized in that: The rotating shaft (220) is key-slidably connected to a mounting ring (270), the rack (260) is fixedly connected to the mounting ring (270), a rotating ring (280) is rotatably connected to the mounting ring (270), an electric telescopic rod (290) is connected to the inner wall of the drying tower (110), and the rotating ring (280) is connected to the output end of the electric telescopic rod (290), when the temperature in the drying tower (110) decreases, the electric telescopic rod (290) is extended so that the angle of the blade (230) increases and the air output is increased, and when the temperature in the drying tower (110) increases, the electric telescopic rod (290) is shortened so that the angle of the blade (230) decreases and the air output is reduced.

8. The acetylation spray drying equipment according to claim 7, characterized in that: It also includes a condensing mechanism (300), wherein the condensing mechanism (300) includes a condensing pipe (310) sleeved on the steam exhaust pipe (120), and cold water flows inside the condensing pipe (310).

9. The acetylation spray drying equipment according to claim 8, characterized in that: The condenser pipe (310) is connected to a water inlet pipe (320) and a water outlet pipe (330).

10. The acetylation spray drying equipment according to claim 9, characterized in that: The water inlet pipe (320) is connected to a water pump (340), and when the temperature sensor detects that the temperature in the drying tower (110) increases, the pumping speed of the water pump (340) increases.

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