CN110743465B

CN110743465B - Spray granulation desiccator

Info

Publication number: CN110743465B
Application number: CN201911066943.3A
Authority: CN
Inventors: 刘祖锋; 魏砚广
Original assignee: HUBEI YISHIZHUANG AGRICULTURAL TECHNOLOGY CO LTD; Hubei Jiamachi Ecological Agriculture Co ltd
Current assignee: Hubei jiamachi Ecological Agriculture Co.,Ltd.; Hubei yishizhuang Agricultural Technology Co., Ltd
Priority date: 2019-11-04
Filing date: 2019-11-04
Publication date: 2022-01-14
Anticipated expiration: 2039-11-04
Also published as: CN110743465A

Abstract

The invention relates to the technical field of chemical equipment, and discloses a spray granulation dryer which comprises a mother liquor tank, a feed pump, an atomizer, a heater, a drying tower, a discharge valve, a bag-type dust collector, an induced draft fan and a rotary diffuser, wherein the mother liquor tank, the feed pump and the atomizer are connected through a pipeline, and the atomizer is fixedly arranged in the middle of an inner cavity of the drying tower. Through the setting with the rotary diffuser, make vaporific liquid drop upwards diffusion and with the hot-blast contact of heliciform, then mix mutually, hot-blast drying time to vaporific liquid drop has been increased, the degree of dryness of granule has been improved, and eliminated and not got into cyclone by dry vaporific liquid drop, the process has been simplified, and the machining efficiency is improved, make simultaneously can collide the fusion between the vaporific liquid drop, after reaching the granule and requiring the size, by the bottom that the drying falls into the drying tower, the quality of granule has been improved, and the dust that does not reach the standard that carries in the hot-blast has been reduced, the working strength of sack cleaner is reduced.

Description

Spray granulation desiccator

Technical Field

The invention relates to the technical field of chemical equipment, in particular to a spray granulation dryer.

Background

A spray granulation dryer is a drying device for producing products after meeting the requirement of granularity by carrying out fluidization, dust removal, atomization, solidification and other treatments on materials, the working principle is as shown in figure 1, the ground powder and a certain amount of adhesive are added into a mother liquor tank 1 for stirring and blending, the mixture is uniformly blended to form granular powder, the granular powder is sent into an atomizer 3 through a feeding pump 1 and forms fog-shaped liquid drops under the action of pressure, the fog-shaped liquid drops are upwards sprayed and meet the downward hot air formed by an air blower 4, a heater 5 and a hot air distributor 6, the moisture in the fog-shaped liquid drops is dried by the hot air to form granules which fall into the bottom of a drying tower 7, meanwhile, the hot air carries a part of the granules which are not dried and have insufficient granularity to enter a cyclone separator 9 for separation, and finally the hot air enters a bag dust remover 10 for further dust removal, but has some defects, the following;

firstly, the contact time of the upward sprayed mist-like liquid drops and the downward hot air is too short, so that the particle dryness is insufficient, and a part of mist-like liquid drops are not dried timely and enter the cyclone separator 9 along with the hot air, and the particle size can be controlled only by the size of the liquid drops in the drying process, so that the particle size is uneven and the quality is poor.

Secondly, because hot-blast is perpendicular downwards, easily with atomizer 3 direct contact for the powder of jet orifice department is not sprayed yet and just is dried, causes the jet orifice to block up, influences the injection effect, causes the granule quality to descend, in case all block up, then need shut down the maintenance, causes machining efficiency to reduce.

Disclosure of Invention

The invention provides a spray granulation dryer, which has the advantages of high processing efficiency and good particle quality and solves the problems in the background technology.

The invention provides the following technical scheme: the utility model provides a spray granulation desiccator, includes mother liquor jar, delivery pump, atomizer, heater, drying tower, discharge valve, sack cleaner, draught fan and rotary diffuser, pass through the pipe connection between mother liquor jar, delivery pump and the atomizer, atomizer fixed mounting is at the middle part of drying tower inner chamber, the air-blower passes through the pipe connection with the heater and with the left top fixed connection of drying tower, discharge valve fixed mounting is in the bottom of drying tower, the pipe connection is passed through with the top of drying tower to the sack cleaner, fixed mounting has rotary diffuser in the inner chamber of drying tower, rotary diffuser cup joints with the atomizer activity, rotary diffuser is located the atomizer directly over.

Preferably, the drying tower includes tower body, hot-blast import and hot air exitus, hot-blast import is seted up at the left top of tower body and is tangent with the tower body, thirty degrees down to the opening slant of hot-blast import, the cavity has been seted up at the top of tower body, cavity and hot air exitus intercommunication.

Preferably, the rotary diffuser includes a motor, a rotation connecting shaft, and a rotary head, the motor is fixedly installed on the upper surface of the drying tower, and the rotary head is in transmission connection with the motor through the rotation connecting shaft.

Preferably, the rotating head includes fixed connection block, fixed block, blade and chute, the upper surface of fixed connection block and the bottom fixed connection who rotates the connecting axle, fixed connection block's middle part fixed mounting has circular cone piece, the outside fixed connection of fixed connection block and fixed block, the even fixed mounting of upper surface of fixed block has the blade, thirty degrees and certain radian have in the blade slant, the chute has been seted up on the fixed block and between the blade, thirty degrees under the chute slant.

Preferably, the rotating direction of the rotating diffuser is opposite to the rotating direction of the hot air flow, and the rotating speed of the hot air flow is greater than the rotating speed of the mist-like droplet swirling flow.

The invention has the following beneficial effects:

1. through the setting with the rotary diffuser, make vaporific liquid drop upwards diffusion and with the hot-blast contact of heliciform, then mix mutually, hot-blast drying time to vaporific liquid drop has been increased, the degree of dryness of granule has been improved, and eliminated and not got into cyclone by dry vaporific liquid drop, the process has been simplified, and the machining efficiency is improved, make simultaneously can collide the fusion between the vaporific liquid drop, after reaching the granule and requiring the size, by the bottom that the drying falls into the drying tower, the quality of granule has been improved, and the dust that does not reach the standard that carries in the hot-blast has been reduced, the working strength of sack cleaner is reduced.

2. Through the setting of fixed connection piece and blade, with vaporific liquid drop further diffusion to carry out completely cut off atomizer and hot-blast, effectively reduced the drying rate of powder in the atomizer, and then increase equipment operating time, further improve work efficiency.

Drawings

FIG. 1 is a schematic diagram of a prior art structure;

FIG. 2 is a schematic structural view of the present invention;

FIG. 3 is a schematic front view of a structural drying tower of the present invention;

FIG. 4 is a schematic top view of a structural drying tower of the present invention;

FIG. 5 is a schematic view of the invention at A-A in FIG. 4;

FIG. 6 is an enlarged view of the point B in FIG. 3 according to the present invention;

FIG. 7 is an enlarged view of the point C in FIG. 5 according to the present invention.

In the figure: 1. a mother liquor tank; 2. a feed pump; 3. an atomizer; 4. a blower; 5. a heater; 6. a hot air distributor; 7. a drying tower; 71. a tower body; 72. a hot air inlet; 73. a hot air outlet; 8. a discharge valve; 9. a cyclone separator; 10. a bag-type dust collector; 11. an induced draft fan; 12. a rotating diffuser; 121. an electric motor; 122. rotating the connecting shaft; 123. rotating the head; 1231. fixing a connecting block; 1232. a fixed block; 1233. a blade; 1234. a chute.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 2-7, a spray granulation dryer comprises a mother liquor tank 1, a feed pump 2, an atomizer 3, a heater 5, a drying tower 7, a discharge valve 8, a bag-type dust collector 10, an induced draft fan 11 and a rotary diffuser 12, wherein the mother liquor tank 1, the feed pump 2 and the atomizer 3 are connected through a pipeline, the atomizer 3 is fixedly installed in the middle of an inner cavity of the drying tower 7, an air blower 4 is connected with the heater 5 through a pipeline and is fixedly connected with the left top of the drying tower 7, the discharge valve 8 is fixedly installed at the bottom of the drying tower 7, the bag-type dust collector 10 is connected with the top of the drying tower 7 through a pipeline, the rotary diffuser 12 is fixedly installed in the inner cavity of the drying tower 7, the rotary diffuser 12 is movably sleeved with the atomizer 3, and the rotary diffuser 12 is located right above the atomizer 3.

Wherein, the drying tower 7 includes the tower body 71, hot-blast import 72 and hot-blast outlet 73, hot-blast import 72 is seted up at the left top of tower body 71 and is tangent with tower body 71, hot-blast import 72's opening is thirty degrees downwards to one side, after hot-blast entering, make hot-blast form clockwise hot-blast stream in tower body 71, make it have certain centrifugal force, reach the granule size after will drying and separate, make it fall, improve the degree of consistency of granule size, increase granule quality, the cavity has been seted up at the top of tower body 71, the cavity communicates with hot-blast outlet 73, make hot-blast from hot-blast outlet 73 discharge after rising from the middle part of tower body 71, can effectively avoid causing the interference to the hot-blast that gets into from hot-blast import 72.

Wherein, rotary diffuser 12 includes motor 121, rotate connecting axle 122 and rotating head 123, motor 121 fixed mounting is on the upper surface of drying tower 7, rotating head 123 is connected with motor 121 transmission through rotating connecting axle 122, rotating head 123 is rotatory under motor 121's drive, further spread the vaporific liquid drop that atomizer 3 jetted, make vaporific liquid drop form oblique ascending whirl in drying tower 7's inside, and then contact with the hot-blast stream, and by dry formation granule, atomizer 3 has been avoided carrying out effectual contact with hot-blast, the jam time of the jet orifice on atomizer 3 has been improved, and the work efficiency is improved.

Wherein, the rotating head 123 comprises a fixed connecting block 1231, a fixed block 1232, a vane 1233 and a chute 1234, the upper surface of the fixed connecting block 1231 is fixedly connected with the bottom end of the rotating connecting shaft 122, the middle part of the fixed connecting block 1231 is fixedly provided with a conical block, the atomized liquid drops can be effectively dispersed to avoid direct upward spraying, the fixed connecting block 1231 is fixedly connected with the outer side of the fixed block 1232, the blades 1233 are uniformly and fixedly arranged on the upper surface of the fixed block 1232, the blades 1233 are arranged thirty degrees upwards in an inclined way and have a certain radian, the dispersed atomized liquid drops are further formed into an inclined upward rotational flow, further better contacts with hot air flow, increases the drying speed of the mist-like liquid drops, improves the processing efficiency, arranges a chute 1234 on the fixed block 1232 and between the blades 1233, inclines the chute 1234 for thirty degrees downwards, can prevent effectively that the granule from falling on fixed block 1232, roll on atomizer 3 and cause the hindrance to spraying of powder.

The rotating direction of the rotary diffuser 12 is opposite to that of the hot air flow, the rotating speed of the hot air flow is greater than that of the mist liquid drop rotational flow, the mist liquid drop rotational flow and the hot air flow can be collided and fused, the hot air flow can carry the mist liquid drop rotational flow, the drying time of hot air to the mist liquid drops is prolonged, the formation of particles is effectively improved, meanwhile, the contact probability among the mist liquid drops is increased, the particles can reach effective specifications after being dried, and the quality of the particles is improved.

The working principle is that the ground powder and a certain amount of adhesive are added into a mother liquor tank 1 to be stirred and blended, the mixture is uniformly blended to form granular powder, the granular powder is sent into an atomizer 3 through a feeding pump 2 and forms mist-shaped liquid drops under the action of pressure, the granular powder is sprayed upwards and is scattered around under the action of a fixed connecting block 1231, meanwhile, under the drive of a motor 121, blades 1233 rotate and further scatter the mist-shaped liquid drops around to form rotational flow, meanwhile, hot air formed by an air blower 4 and a heater 5 enters a tower body 71 from a hot air inlet 72 and forms downward rotating hot air flow which collides and mixes with the rotational flow of the mist-shaped liquid drops, then the hot air flow carries the mist-shaped liquid drops and rotates in the tower body 71, at the moment, moisture in the mist-shaped liquid drops is dried by the hot air to form required particles which fall into the bottom of a drying tower 7, and simultaneously, a part of the powder with insufficient granularity is collided and fused, particles with required sizes are formed, and fall into the bottom of the drying tower 7 after being dried, and then hot air flows upwards from the middle part and flows out from the hot air outlet 73, and enters the bag-type dust collector 10 to remove tiny dust.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a spray granulation desiccator, includes mother liquor jar (1), charge pump (2), atomizer (3), heater (5), drying tower (7), discharge valve (8), sack cleaner (10), draught fan (11) and rotary diffuser (12), pass through the pipe connection between mother liquor jar (1), charge pump (2) and atomizer (3), atomizer (3) fixed mounting is at the middle part of drying tower (7) inner chamber, and air-blower (4) and heater (5) pass through the pipe connection and with the left top fixed connection of drying tower (7), discharge valve (8) fixed mounting is in the bottom of drying tower (7), the pipe connection is passed through with the top of drying tower (7) in sack cleaner (10), its characterized in that: a rotary diffuser (12) is fixedly installed in the inner cavity of the drying tower (7), the rotary diffuser (12) is movably sleeved with the atomizer (3), and the rotary diffuser (12) is positioned right above the atomizer (3);

the drying tower (7) comprises a tower body (71), a hot air inlet (72) and a hot air outlet (73), wherein the hot air inlet (72) is formed in the top of the left side of the tower body (71) and is tangent to the tower body (71), the opening of the hot air inlet (72) is inclined downwards for thirty degrees, a cavity is formed in the top of the tower body (71), and the cavity is communicated with the hot air outlet (73);

the rotary diffuser (12) comprises a motor (121), a rotating connecting shaft (122) and a rotating head (123), the motor (121) is fixedly mounted on the upper surface of the drying tower (7), the rotating head (123) is in transmission connection with the motor (121) through the rotating connecting shaft (122), the rotating head (123) comprises a fixed connecting block (1231), a fixed block (1232), blades (1233) and chutes (1234), the upper surface of the fixed connecting block (1231) is fixedly connected with the bottom end of the rotating connecting shaft (122), conical blocks are fixedly mounted in the middle of the fixed connecting block (1231), the fixed connecting block (1231) is fixedly connected with the outer sides of the fixed block (1232), the blades (1233) are uniformly and fixedly mounted on the upper surface of the fixed block (1232), the blades (1233) are inclined upwards by thirty degrees and have radian, the chutes (1234) are formed in the fixed block (1232) and between the blades (1233), the chute (1234) is inclined downwardly thirty degrees.

2. A spray granulation dryer as claimed in claim 1, wherein: the rotating direction of the rotating diffuser (12) is opposite to that of the hot air flow, and the rotating speed of the hot air flow is greater than that of the mist liquid drop rotational flow.