Drying equipment capable of continuously processing precursor material

Abstract

The invention relates to the field of precursor material drying, and provides a drying device capable of continuously processing a precursor material, comprising: a mounting table; the housing is fixedly arranged on one side of the upper part of the mounting table; a discharge hole is obliquely formed in the upper part; the air guide volute is fixedly connected to the lower end part of the housing, and an air inlet pipe is arranged at a volute tongue of the air guide volute; and the shunting turbofan is arranged in the air guide volute and consists of an upper side plate, a lower side plate and a plurality of arc-shaped fan blades which are uniformly arranged in the side plates at intervals. A precursor material is sprayed into the drying equipment in a mist shape through the spraying mechanism, continuous feeding of materials with different moisture contents is achieved for continuous processing, the phenomena of agglomeration and drying scaling of the materials when the materials enter the drying area of the equipment are effectively reduced, meanwhile, heat discharged during drying is recycled through the heat recovery pipe, and the energy consumption is reduced. And while the production energy consumption is reduced, the product granularity and granularity distribution are effectively controlled, and the drying uniformity is ensured.

Description

Technical Field

[0001] The invention relates to the field of drying equipment, and in particular to a drying equipment capable of continuously processing precursor materials. Background Art

[0002] Precursor material is the raw material for preparing ternary materials, which is a composite of nickel, cobalt and manganese. Precursor materials usually need to undergo special treatment to obtain the desired physical and chemical properties. Drying is a key step in these treatment processes. Removing moisture from the material is conducive to the precursor material having better fluidity and mixing properties in subsequent treatments. At the same time, during the drying process, the particle size and distribution within the material can be adjusted to improve the density and uniformity of the doping elements in the material. In the production of ternary material precursors, the drying process determines the moisture content of the finished precursor and has a certain impact on the crystal structure.

[0003] In the production of ultrafine precursor powders, after filtering and washing, the moisture content of the filter cake is about 20%, while the moisture content of the precursor material during drying is required to be reduced from about 20% to below 1%. The material during drying is required to be loose but not fluid, heated evenly, and avoid the effects of excessive temperature, excessive drying time, and oxidation reaction of the precursor material during drying on the quality of the material. The correct selection of drying equipment is directly related to the quality of the product.

[0004] At present, the commonly used precursor drying equipment includes hot air / vacuum ovens, disc dryers, flash dryers, etc. The hot air / vacuum oven processing equipment is superior to other drying products in terms of product quality indicators such as sphericity, surface regularity, product consistency and fine powder content. Considering that the oven has a wide range of applicability, but the drying time is long, the thermal efficiency is lower than other drying equipment, and the degree of automation is low, it is not suitable for large-scale production; conventional disc dryers can operate continuously. After the precursor material enters the drying equipment, the material is dispersed on the surface of the multi-layer drying disc inside it and heated by heat conduction. The wet material on the drying plate is discharged continuously through the internal rotating rake device, which is suitable for large-scale and continuous production. Similar equipment includes double-paddle disc drying equipment. However, this type of equipment is not suitable for drying paste-like and filter cake-like precursor filter cakes with high moisture content. It needs to be used in conjunction with centrifugal equipment, which increases the processing steps and maintenance costs. Of course, the use of flash dryers can solve the problem of high moisture content in materials, but this type of equipment faces new problems, that is, the power blower for transmitting materials in the equipment during processing will cause a large amount of heat to dissipate when working, and the gas heater continues to work at full load, resulting in serious energy consumption.

[0005] In summary, the existing mainstream precursor material drying equipment has various defects when used and cannot meet diversified production needs. Summary of the invention

[0006] The present invention aims to solve the problem that existing drying equipment has various defects and cannot meet various requirements during processing. To this end, the present invention provides a drying equipment that can be suitable for drying materials with different moisture contents and can continuously process precursor materials with relatively low energy consumption.

[0007] The technical scheme is as follows: A drying device for continuous processing of precursor materials, comprising a mounting platform; a cover shell, fixedly arranged on one side of the upper part of the mounting platform, and having a discharge port inclined on its upper part; an air guide volute, fixedly connected to the lower end of the cover shell, and having an air inlet pipe at its volute tongue; a diverter fan, arranged in the air guide volute, consisting of two upper and lower side plates and a number of arc-shaped fan blades evenly spaced inside the side plates, a number of wind tunnels are opened on the upper side plate of the diverter fan, and the wind tunnels are arranged on the upper side plate at a position corresponding to the two arc-shaped turbofans; a chassis, installed on the inner side of the diverter fan, having a groove on its upper part, the chassis as a whole is consistent with the height of the diverter fan, and completely closes one side of the inner circle of the diverter fan, and completely closes the lower end of the cover shell together with the diverter fan and the air guide volute; a circulating fan, arranged on the lower left side of the mounting platform, consisting of a volute-shaped air chamber and a motor, and the volute-shaped air chamber is provided with a fan along the side wall The vent pipe is connected to the air inlet of the air guide volute by extending and protruding, and the vent pipe is connected to the air inlet of the air guide volute. The conical cylinder is installed on the mounting platform at a side away from the cover shell, and is hollow inside. A guide pipe is obliquely arranged at the tangent of one side of its upper edge, and the guide pipe is communicated with the upper space inside the conical cylinder. A downward spiral guide groove is provided at the inlet of the guide pipe in the conical cylinder, and a discharge opening is provided at the lower part of the cone of the conical cylinder. The inner cylinder is passed through the concentric part of the upper part of the conical cylinder, and a tubular channel is provided inside, and the lower part of the inner part penetrates into the space in the upper part of the cone of the conical cylinder. The discharge pipe is installed between the discharge port of the cover shell and the guide pipe on the conical cylinder, and connects the cover shell with the internal space of the conical cylinder. The circulating air duct has one end connected with the upper end of the inner cylinder, and the other end connected with the volute air chamber of the fan. The spraying mechanism is arranged on the cover shell, and sprays the mist material into the cover shell through the spraying mechanism.

[0008] Optionally, the spraying mechanism includes: a feed bin, fixedly mounted on the outer wall of the cover shell away from the conical cylinder, the inner space of which is larger at the top and smaller at the bottom, and the inner lower space of which is retracted toward one side of the cover shell; a feed pipe, arranged at the upper part of the feed bin, connected to the inside of the feed bin, and used to connect to an external material transfer pipeline; an arc-shaped cavity plate, arranged at the lower part of the feed bin, one side of which is in contact with the outer wall of the cover shell, and the inner cavity of which is connected to the inside of the feed bin; spray guns, arranged at intervals in the There are no less than three of them on the arc-shaped cavity plate, which are composed of a distribution pipe, an air inlet joint, and a nozzle. One end of the lower part of the distribution pipe penetrates into the cavity of the arc-shaped cavity plate, and the nozzles of the spray guns all penetrate into the cover shell, and the materials in the feed bin are input into the cover shell through the spray gun; a blocking block is fixedly arranged on the upper part of the distribution pipe of the spray gun; a spacer circular block is fixedly arranged on the upper part of the distribution pipe of the spray gun, and its upper end is connected to the blocking block, separating a circle of annular gap on the upper part of the distribution pipe of the spray gun.

[0009] Optionally, the number of the feed pipes is not less than two, and they are evenly distributed on the feed bin at front and rear intervals.

[0010] Optionally, it also includes an intake valve installed between the upper parts of the block blocks, and correspondingly, two intake holes are opened in the block blocks for introducing airflow into the intake valve, and a plurality of air flow channels are provided in the intake valve that are connected to the upper intake holes of different block blocks, and the air flow channels in the intake valve are connected to the spacing circular block through the two intake holes, and the intake valve is provided with an intake connector that is connected to an external high-pressure airflow, and the air flow channels are all connected to the intake connector; a fixed block is symmetrically installed on the upper inner side of the spacing circular block, and is respectively connected to the two intake ports on the block blocks. The air holes are close; a check plate is rotatably arranged on the fixed block, and the two check plates in the same spray gun are symmetrically arranged and rotate on the upper part of the spacer circular block. The check plate has two forms: a first state in which it is rotated downward to be perpendicular to the fixed block and a second state in which it is rotated to be straight with the fixed block. At this time, one side of the two check plates is in contact with the blocking block, and the lower port of the air inlet is covered by the check plate; a torsion spring is wound on the fixed block, one end of which is connected to the check plate, and is used to maintain the check plate and the blocking block in contact.

[0011] Optionally, it also includes a dual-axis motor, which is fixedly mounted on one wall of the feed bin; an eccentric block, which is symmetrically mounted on the output shaft of the dual-axis motor and rotates synchronously with the rotation of the output shaft of the dual-axis motor.

[0012] Optionally, it also includes diverter spacers, which are evenly arranged in the arc cavity plate and arranged in an arc shape along the cavity shape of the arc cavity plate. The internal space of the arc cavity plate is divided into cavities corresponding to the number of spray guns through the diverter spacers, and the lower end of the spray gun penetrates into the cavity with relative position. The diverter spacer is set in a cone shape with its tip facing the feed bin; material guide protrusions are distributed and arranged at the bottom of the cavity of the arc cavity plate. The material guide protrusions are all arc-shaped, and the material guide protrusions in a cavity are combined into a cluster and are respectively arranged under the spray gun, and the end of the material guide protrusion away from the cavity opening of the arc cavity plate is gathered toward the position of the spray gun.

[0013] Optionally, an arc-shaped guide block is further included, which is arranged in a ring on the split turbofan, and an air duct is provided on the downward side of the arc-shaped guide block, and the number of the air duct is consistent with the number of the wind tunnels on the split turbofan, so as to cover the wind tunnels one by one accordingly.

[0014] Optionally, a material lifting mechanism is provided on the chassis, and the material lifting mechanism includes: a driving motor fixedly mounted concentrically on the bottom of the chassis; a roller rotatably arranged concentrically on the inner side of the chassis, the lower end of which is fixedly connected to the output shaft of the driving motor, and a disc frame is fixedly arranged on the outer side of the upper end thereof; support rods are distributed on the disc frame of the roller at intervals, and the number of the support rods is not less than three; a sliding rod is slidably arranged on the support rod through an elastic member and is elastically connected to the support rod; a scraper fixedly mounted on the lower part of the sliding rod, and the bottom of the scraper is in rotational contact with the arc-shaped groove on the chassis.

[0015] Optionally, a mounting seat is further included, which is arranged on the top of the cover shell and is concentric with the cover shell, and a detachable panel is embedded in the inner circle of the mounting seat.

[0016] Compared with the prior art, the present invention has the following advantages: the present invention sprays the precursor material into the pre-drying equipment in the form of mist through a spraying mechanism, which can realize continuous feeding of materials with different moisture contents for continuous processing, separates or breaks up large particles of materials before spraying, effectively reduces the phenomenon of material agglomeration when entering the drying zone of the equipment, and ensures that the materials are heated evenly. At the same time, a pre-drying zone is set to preheat and dry the materials. Through contact with the heat flow, the ability of the gas entering the equipment to absorb moisture is improved and the moisture content in the materials is reduced, which is beneficial to control the product particle size and particle size distribution and ensure the uniformity of drying.

[0017] The present invention recycles and reuses the heat flow extracted by the fan during the drying process through the provided reflux pipeline, thereby solving the problems of high energy consumption and large displacement in traditional drying methods, meeting increasingly stringent environmental protection requirements, and reducing production costs.

[0018] The present invention provides a material lifting mechanism to stir and break up the high-moisture content, agglomerated large-particle materials that cannot be transported with the air flow and are deposited at the bottom of the pre-drying area, forcing the materials to fully contact the heat flow, and changing the deposited materials into a suspended and rotating particle state, which can be effectively transported to the next processing area under the action of the air flow fluid drag.

[0019] The present invention provides a vibration mechanism on the feed bin to vibrate the feed bin, thereby preventing and eliminating the "blockage" and "tower arch" phenomena in the feed bin caused by friction, deliquescence, electrification, component segregation and the like in the material, and effectively removes the material adhering to the bin wall and the arc cavity plate space, thereby improving the fluidity of the material in the feed bin, reducing the occurrence of material jamming, and ensuring smooth feeding of the spray gun.

[0020] The present invention arranges an arc-shaped guide block at the outlet of the wind tunnel to guide the multiple dispersed airflows blown in by the fan in an orderly manner, so as to generate eddy currents in the cover shell, reduce the irregular suspension and floating of materials due to turbulence in the processing space, effectively improve the orderly fluidity of materials in the drying equipment, improve the material transfer efficiency, and at the same time, reduce the powder that is not completely emptied from falling into the wind tunnel and the turbofan when the machine is shut down. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention.

[0022] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention without hiding the mounting platform.

[0023] Figure 3 It is a cross-sectional view of the preheating mechanism and the drying and separation mechanism of the present invention.

[0024] Figure 4 It is a cross-sectional view of the fan and the drying and separation mechanism of the present invention.

[0025] Figure 5 It is a three-dimensional structural schematic diagram of the feed bin and the spraying mechanism of the present invention.

[0026] Figure 6 The figure is a disassembled view of the components such as the material introduction protrusion, the flow dividing baffle and the material spraying mechanism of the present invention.

[0027] Figure 7 It is an enlarged view of point A of the present invention.

[0028] Figure 8 It is a three-dimensional structural schematic diagram of the arc-shaped guide block and the material lifting mechanism of the present invention.

[0029] Fig. 9 This is a disassembly diagram of the air guide volute, splitter turbofan and chassis of the present invention.

[0030] Fig.10It is a schematic diagram of the three-dimensional structure of the material lifting mechanism of the present invention.

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the rapping mechanism of the present invention.

[0032] Description of reference numerals: 1_mounting platform, 2_fan, 3_air guide volute, 31_cover, 32_divider turbofan, 33_chassis; 4_feeding bin, 40_feeding pipe, 41_arc cavity plate, 42_spray gun, 43_spacer block, 44_blocking block, 5_conical cylinder, 51_inner cylinder, 6_discharging pipe, 61_circulating air duct; 8_arc guide block; 9_driving motor, 91_roller, 92_support rod, 93_sliding rod, 94_scraper; 10_intake valve, 101_intake hole, 102_fixing block, 103_check plate, 104_torsion spring; 11_Dual-axis motor, 111_eccentric block; 12_Introduction bump, 13_Diversion partition; 14_Mounting seat. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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.

[0034] The present invention provides a drying device for continuous processing of precursor materials. Figure 1-4, including: a mounting platform 1; a conical cylinder 5 and a cover shell 31 are respectively provided on the left and right sides of the upper part of the mounting platform 1, and the interiors of the conical cylinder 5 and the cover shell 31 are both hollow. The cover shell 31 and the conical cylinder 5 are firmly installed through the mounting platform 1, and a conical material collection area is provided on the upper part of the cover shell 31, where a discharge port is inclined and extended outward, and a material guide pipe is inclined at the tangent of one side of the edge of the upper part of the conical cylinder 5. The discharge port of the material collection area on the upper part of the cover shell 31 and the material guide pipe on the upper part of the conical cylinder 5 are connected by a discharge pipe 6, and the discharge pipe 6 connects the space of the cover shell 31 with the conical cylinder 5, and the materials in the cover shell 31 and the conical cylinder 5 can be transmitted to each other; the lower part of the cover shell 31 is fixedly connected to the air guide volute 3, and the air guide volute 3 An air inlet pipe is provided at the volute tongue, and a split turbofan 32 is fixedly provided inside the air guide volute 3. A chassis 33 is fixedly connected to the split turbofan 32. A groove is provided on the upper part of the chassis 33. The bottom opening of the cover shell 31 is closed by the chassis 33, the split turbofan 32 and the air guide volute 3. A fan 2 is installed at the lower left side of the mounting platform 1 near the conical cylinder 5. The fan 2 consists of a volute-shaped air chamber and a motor. The volute-shaped air chamber is provided with fan blades connected to the motor. The volute-shaped air chamber is provided with an air guide outlet extending and protruding along the side wall. When the fan blades rotate, air will flow out from the air guide outlet. The air guide outlet of the fan 2 is connected and communicated with the air inlet pipe of the air guide volute 3. When the fan 2 is working, the generated airflow will be transmitted into the air guide volute 3, see Figure 1-3 A spraying mechanism for spraying mist material into the housing 31 is provided on one side of the outer wall of the housing 31; See also Figure 1-4 The conical cylinder has an inner cylinder 51 with a through hole in the inner cylinder vertically disposed on the upper part. A circulating air duct 61 is connected to one end of the upper part of the inner cylinder 51. The other end of the circulating air duct 61 is connected to one side of the volute air chamber of the fan 2. The inner cylinder 51 is connected to the air chamber of the fan 2 through the circulating air duct 61. A pipe interface for connecting an external separation or dust removal device is reserved on the circulating pipe 61. Fig. 9The split turbofan 32 is composed of two upper and lower side plates and a plurality of arc-shaped blades. A plurality of arc-shaped guide channels are formed between the two side plates through a plurality of arc-shaped blades evenly spaced. A plurality of wind tunnels are provided above the corresponding guide channels on the side plate on the upper side of the split turbofan 32, and are correspondingly arranged at a relatively central position between the corresponding two arc-shaped blades of the upper side plate. The wind tunnels are dispersed and annularly arranged around the split turbofan 32. The opening direction of the wind tunnel is roughly consistent with the arrangement direction of the arc-shaped blades. When the airflow in the split turbofan 32 is transmitted from the wind tunnel, it rushes out upward, hits the inner wall of the cover 31, and spirally rises along the inner wall of the cover 31. The airflow rushing out of the plurality of wind tunnels forms vortices in the cover 31. When the fan 2 is working, a large amount of airflow generated by the fan 2 will flow into the split turbofan 32 through the wind guide volute 3, and enter the lower area of ​​the cover 31 through the wind tunnel on the split turbofan 32, forming a higher air pressure in the cover 31, and rushing into the cover 3 The airflow in 1 flows upward in a spiral along the inner wall of the cover shell 31, and is pushed by the pressure of the airflow to be introduced into the conical cylinder 5 along the discharge pipe 6. A downward spiral guide groove is provided at the inlet of the guide pipe inside the conical cylinder 5. The airflow with a certain flow rate rotates near the inner wall of the cylinder at the upper part of the conical cylinder 5 under the tangential guidance of the guide groove to form an external vortex flow, and spirally moves downward along the conical interior of the lower part of the conical cylinder 5. When the airflow reaches the cone, it moves toward the center due to the contraction of the cone, and its tangential speed continues to increase. When the airflow reaches a certain position at the lower end of the cone, it will turn in the same rotation direction and continue to spiral along the central axis of the conical cylinder 5 from bottom to top, and flow out at the lower end outlet of the inner cylinder 51 at the upper part of the conical cylinder 5. When the fan is working, a certain suction force will be generated in the air inlet area of ​​the volute air chamber, and the airflow transmitted in the circulation duct will flow into the air chamber of the fan 2 and continue to be introduced into the air guide volute 3.

[0035] See also Figure 1 , Figure 2 , Figure 5 and Figure 6The spraying mechanism includes: a feed bin 4 fixedly mounted on the outer wall of the cover shell 31 away from the conical cylinder 5, the internal space of the feed bin 4 is large at the top and small at the bottom, and its lower space is retracted toward one side of the cover shell 31; a feed pipe 40 for connecting to an external material transfer pipeline is provided at the upper part of the feed bin 4, the feed pipe 40 is communicated with the inside of the feed bin 4, and an arc-shaped cavity plate 41 is provided at the lower part of the feed bin 4, a feed cavity is opened in the arc-shaped cavity plate 41, one side of which is in contact with the outer wall of the cover shell 31, and its internal cavity is communicated with the inside of the feed bin 4, and the material entering from the feed pipe 40 will be discharged along the feed pipe. The inner wall of the silo 4 flows downward to the cavity opening of the arc cavity plate 41. There are no less than three spray guns 42 evenly spaced on the arc cavity plate 41. The spray gun 42 is a powder spray gun 42, and its feed port is connected to the internal cavity of the arc cavity plate 41. The nozzles of the spray gun 42 are all extended into the cover shell 31; the high-pressure airflow is connected to the air inlet joint set on the spray gun 42, and a large suction force is generated at the feed port of the spray gun 42, and the cavity depth in the arc cavity plate 41 should be appropriate: to ensure that the material entering the feed silo 4 does not directly contact the spray gun 42, and to avoid the material covering the spray gun 42 feed port, causing the feed port to be blocked, and the other is to avoid the material from having to pass a long distance to enter the spray gun 42, which will lead to insufficient suction and the material cannot be effectively sucked. The nozzles of the spray gun 42 are all inserted into the cover shell 31, and the ends of the nozzles are provided with duckbill nozzles, through which the materials in the feed bin 4 are sprayed into the cover shell 31 in the form of mist. A block 44 for closing the upper part of the spray gun 42 is fixedly provided on the upper part of the spray gun 42, and a spacer round block 43 is fixedly provided on the upper inner part of the spray gun 42, and its upper end is connected to the block 44, and the upper part of the spray gun 42 is separated The interior of the spacing block 43 is hollow, but the lower part is in a closed state, and a circle of annular protrusions is provided at its lower end. The protrusions are below the feed port of the spray gun 42 at the nozzle, further reducing the annular gap. In this way, the material sucked into the spray gun 42 will first pass through the lower part of the gap between the spacing block 43 and the inside of the spray gun 42 before being sprayed through the nozzle. If the agglomerated particle size of the sucked material is too large, it will collide with the protrusions of the spacing block 43 to disperse or be blocked, thereby ensuring that the particle size of the material entering the spray gun 42 and sprayed into the cover 31 is not too large.

[0036] Among them, in the production of ultrafine powder of precursor, after filtering and washing processes, the moisture content of the obtained filter cake is about 20%, and the moisture content in the precursor material during drying is required to be reduced from about 20% to below 1%. That is to say, before the material is dried, the moisture content in different batches of materials is not consistent. When the drying equipment is processed, it is necessary to ensure that the material is loose during drying, but the fluidity is not bad, and the material is heated evenly; the material is passed into the feed bin 4 through the material transfer equipment. It should be noted that the number of feed pipes 40 should be no less than two, and the front and rear intervals should be evenly distributed. This effectively avoids the powder from entering the feed bin 4. Local accumulation at the drop of a single feed pipe 40 in the feed bin 4 leads to There is no powder around the spray gun 42 away from the feed pipe 43, and the work distribution of the spraying parts is uneven, so that the material cannot be discharged quickly, which affects the feeding of the material transfer equipment. Before the material is discharged into the cover shell 31, the fan 2 needs to be turned on in advance, so that the airflow between the cover shell 31 and the conical cylinder 51 enters the circulation state according to the preset state. The heat source for drying can be steam or airflow heated by connecting the fan 2 to an external heater, or it can be a heating air barrier layer added to the outer wall of the cover shell 31 and the conical cylinder 5, and the heat source is transferred to the drying equipment through the heat transfer of the heating medium. However, before the drying work is carried out, the cover shell 31 and the conical cylinder 5 need to be preheated to the working temperature in advance, so that the sprayed scattered material can be mixed with The heat flow in the cover 31 is fully in contact with the material, so that the moisture content in the material is greatly reduced. Then, the spiral rising airflow discharged from the wind tunnel on the split turbofan 32 carries the material upward to the discharge pipe 6 and is passed into the conical cylinder 5 for secondary drying. When the gas carrying the material enters the conical cylinder 5 axially, the airflow is guided tangentially by the guide groove and rotates in the upper part of the conical cylinder 5. The powder particles with larger density and mass are thrown to the outer wall and separated under the action of the larger inertial centrifugal force compared with the gas. The powder particles cannot follow the tight curve of the airflow due to their too large inertia, so they hit the outer wall and then fall to the bottom of the conical cylinder 5. At this time, the dried powder is discharged from the discharge opening set at the lower part of the cone of the conical cylinder 5. Out, while the hot air containing the separated powder flows upward with the secondary vortex, and is discharged into the fan 2 through the inner cylinder 51 for reuse, so as to realize the material drying and rapid gas-material separation at the same time, and the penetrated material is continuously sprayed into the drying equipment through the spraying mechanism, and the precursor powder is continuously dried and processed with the circulating air path and the conical cylinder 5 for gas-material separation, with high drying efficiency, and effectively avoiding the situation that the material agglomerated and agglomerated due to moisture cannot be evenly heated, resulting in uneven drying, which is suitable for the processing of precursor materials with different moisture contents, and has a wide applicability. At the same time, by recycling the hot air flow extracted by the fan 2, the heat dissipation is reduced, and the energy consumption of the equipment when it is working is greatly reduced.

[0037] See also Figure 3 , Figure 5 , Figure 6 and Figure 7, further comprising: an intake valve 10 installed between the upper parts of the block 44, each block 44 having two intake holes 101 for introducing the airflow of the intake valve 10, a plurality of airflow channels connected to the intake holes 101 in different block 44 are provided in the intake valve 10, the intake valve 10 can control the on-off of the airflow in all the airflow channels, the airflow channel in the intake valve 10 is connected to the spacing block 43 through the two intake holes 101, and a plurality of exhaust holes are correspondingly provided at the lower part of the spacing block 43, since the lower part of the spacing block 43 is in a blocked state, when the gas in the airflow channel enters the spacing block 43 from the air intake hole of the block 44, the airflow will be discharged from the exhaust holes at the lower part of the spacing block 43, the intake valve 10 is provided with an intake connector connected to the external high-pressure airflow, the airflow channels are all connected to the intake connector, the pipe diameter of the intake connector should be larger than the size of the airflow channel in the intake valve 10, so as to ensure that the pressure of the airflow connected to the intake connector is still in the applicable range after the airflow is diverted; See also Figure 5 and Figure 6 , a fixed block 102 is symmetrically installed on the upper inner side of the spacing circular block 43, and the fixed block 102 is close to the two air inlet holes 101 on the blocking block 44 respectively, and a check plate 103 is rotatably provided on the fixed block 102, and a torsion spring 104 is wound on the fixed block 102, one end of the torsion spring 104 is connected to the check plate 103, and when the torsion spring 104 is not subjected to external force, the check plate 103 will be in a relatively straight state. At this time, the upper side of the check plate 103 will be attached to the blocking block 44, and the air inlet hole on the same side of the blocking block 44 will be blocked. The two check plates 103 in the same spray gun 42 are symmetrically arranged. When an airflow with a certain flow rate hits the check plate 103, the check plate 103 of the spray gun 42 rotates downward, so that the lower port of the air inlet hole of the blocking block 44 is connected to the internal space of the spacing circular block, and the airflow enters and is discharged at the exhaust hole of the spacing circular block 43; Among them, when the equipment is working, the air inlet joint of the air inlet valve 10 is connected to an external high-pressure airflow, and the air flow channel inside the air inlet valve 10 is in a closed state. After the spray gun 42 has been working for a period of time, it is inevitable that the lower part of the annular gap between the spacing block 43 and the spray gun 42 will be blocked by materials. At this time, the internal air flow channel is opened by controlling the air inlet valve 10, and the high-pressure airflow will rush open the check plate 103, and quickly rush to the material block from the exhaust hole through the spacing block 43, and impact the blocked material. Under the control of the air inlet valve 10, the air flow channel will be closed immediately, and the airflow will be cut off. Under the action of the torsion spring 104, the check plate 103 will be quickly reset to cover the air inlet, so that the interior of the spacing block 43 is in a closed state at one end, and the material flowing in the spray gun 42 cannot enter the spacing block 43 through the exhaust hole.

[0038] See also Figure 1 , Figure 2 and Fig.11In order to avoid the material getting stuck and sticking to the feeding parts during feeding, the invention also includes: a double-axis motor 11 fixedly mounted on the wall of one side of the feeding bin 4, and eccentric blocks 111 are installed at the ends of the output shafts of the double-axis motor 11 symmetrically, which rotate synchronously with the rotation of the output shaft of the double-axis motor 11, and the centrifugal force generated by the high-speed rotation of the output shaft of the double-axis motor 11 and the eccentric block 111 is used to obtain the exciting force, and the vibration force is continuously transmitted to the feeding bin 4 through the mounting base of the double-axis motor 11, and the feeding bin is continuously vibrated, so as to effectively prevent and eliminate the "blockage" of the material and the "tower arch" phenomenon inside the material caused by friction, deliquescence, electrification, component segregation and other reasons in the material, and effectively remove the material adhering to the bin wall and the space of the arc cavity plate 41, so as to improve the fluidity of the material in the feeding bin 4, reduce the occurrence of material jamming, and ensure the smooth feeding of the spray gun 42.

[0039] See also Figure 5-6 , further comprising: flow dividing blocks 13 evenly spaced in the arc cavity plate 41, the flow dividing blocks 13 being arranged in an arc shape along the cavity shape of the arc cavity plate 41, the flow dividing blocks 13 dividing the inner space of the arc cavity plate 41 into cavities corresponding to the number of spray guns 42, the lower end of the spray gun 42 penetrates into the cavity at a relatively opposite position, and by reducing the suction area of ​​the corresponding spray gun 42, the suction force is more concentrated during feeding, and is not affected by the work of other spray guns 42, so that the material during feeding is more concentrated and The diverter spacer 13 is conically arranged with its tip facing the feed bin 4 and both sides of the tip expanding in arcs. The bottoms of the multiple cavities divided by the arc-shaped cavity plate 41 are all provided with material guide protrusions 12, and the material guide protrusions 12 are all arc-shaped. There are multiple material guide protrusions 12 in a cavity, and they are combined into a cluster, which are respectively arranged under the spray guns 42 installed on the corresponding cavities, and the ends of the material guide protrusions 12 away from the cavity opening of the arc-shaped cavity plate 41 are gathered toward the position of the spray gun 42.

[0040] Among them, the functions of the material guide protrusion 12 and the diverter spacer 13 are: to guide the material to enter the spray gun 42 in an orderly manner, reduce the collision and friction caused by mutual obstruction between materials, and ensure the feeding efficiency. The upward protrusion height of the arc-shaped protrusion 12 is between 15mm and 25mm. The moderate protrusion height can avoid the cavity opening facing the arc-shaped cavity plate 41 from being divided by multiple excessively high protrusions, forming multiple material openings with smaller openings. The gathered materials are blocked when passing through, resulting in blockage at the opening of the arc-shaped cavity plate 41.

[0041] See also Figure 8-9, and further includes: an arc guide block 8 annularly arranged on the split turbofan 32, the arc guide block 8 is a shape in which a low point on one side rises in an arc shape along the inner circle arc line of the chassis 33, and an air duct is provided on the lower side of the arc guide block 8. The number of the arc guide blocks 8 is consistent with the number of wind tunnels on the split turbofan 32, and the wind tunnels are covered one by one accordingly. Before the airflow in the split turbofan 32 flows out of the wind tunnel and enters the cover 31, it will be transmitted along the air duct of the arc guide block 8. Through the guidance of the arc duct and the upper side of the adjacent arc guide block 8, it can be realized The effective control of the direction and of the airflow is realized, eddy currents and turbulence are reduced, and the airflow is evenly distributed in the cover 31, so that the material can be entrained by the airflow with a stable flow rate and direction, and the irregular suspension and floating of the material due to turbulence in the processing space is reduced, the orderly fluidity of the material in the drying equipment is effectively improved, the material transfer efficiency is improved, and the resistance during airflow transmission is reduced, so as to achieve the purpose of energy saving and noise reduction to a certain extent. When the machine is shut down, the powder that is not completely emptied can be reduced to a certain extent from falling into the wind tunnel and the turbofan.

[0042] See also Figure 1 , Figure 2 , Figure 3 and Fig.10 , and further includes: a material lifting mechanism arranged on the chassis 33, the material lifting mechanism includes: a driving motor 9 fixedly installed at the concentric position of the bottom of the chassis 33, the bottom of the driving motor 9 is at the same height as the bottom of the mounting platform 1, and can be supported by the bottom platform of the equipment to improve the stability during operation, a rotating roller 91 is rotatably arranged at the concentric position inside the chassis 33, the lower end of the rotating roller 91 is fixedly connected to the output shaft of the driving motor 9, and a disk rack is fixedly arranged on the outer side of the upper end of the rotating roller 91, and at least three support rods 92 are distributed on the disk rack of the rotating roller 91 at intervals, and the lower outer side of the support rod 92 is passed through The elastic member is provided with a sliding rod 93 in a sliding manner, and the sliding rod 93 is elastically connected to the support rod 92. A scraper 94 is fixedly provided at the lower part of the sliding rod 93. The installation angles of the scrapers 94 on different sliding rods 93 are consistent. Under the action of the elastic member in the sliding rod 93, the bottom of the scraper 94 is always in contact with the groove on the chassis 33, and the side of the scraper 94 close to the chassis 33 is thinner. When the driving motor 9 is working, the roller 91 rotates accordingly, synchronously driving the components on the disc rack to rotate, and one side of the bottom of the scraper 94 rotates with the driving motor and contacts with the chassis 33; Among them, during the drying process, after a period of time, some large particles with high moisture content and agglomerated particles that cannot be transported with the airflow will settle on the bottom plate 33, while the materials near the center point in the groove of the bottom plate 33 are not easily affected by the airflow even if they are dry, and cannot be effectively transmitted out of the cover shell 31. At this time, the scraper 94 is driven by the drive motor 9 to rotate, the materials that fall on the bottom are stirred and broken up, and the deposited materials are changed into a suspended and rotating particle state, forcing the materials to fully contact with the heat flow, and under the action of the airflow fluid drag, they can be effectively transmitted to the next processing area.

[0043] See also Figure 1-3 , also includes: a mounting base 14 arranged on the top of the cover shell 31, the mounting base 14 is located concentrically with the cover shell 31, a detachable panel is embedded in the inner circle of the mounting base 14, the mounting base 14 is used to install a support base reserved for other processing components, the mounting base 14 can be used to install a drive motor to provide driving force for some materials with particle size requirements and an analyzer that needs to perform particle size classification inside the mounting cover shell 31, or to install a heating device to supplement the internal heat of the cover shell 32 and a pipe flange connecting a dehumidification component, etc., to facilitate the subsequent equipment upgrade as needed, and the panel at the inner circle of the mounting base 14 needs to be removed before use.

[0044] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A drying device for continuously processing precursor materials, comprising a mounting table (1); It is characterized in that It also includes a cover (31) fixedly arranged on one side of the upper part of the mounting platform (1), and having an inclined discharge port on its upper part; an air guide volute (3) fixedly connected to the lower end of the cover (31), and having an air inlet pipe at its volute tongue; a splitter turbofan (32) arranged in the air guide volute (3), and comprising two upper and lower side plates and a plurality of arc-shaped fan blades evenly spaced inside the side plates, a plurality of wind tunnels being opened on the upper side plate of the splitter turbofan (32), and the wind tunnels being arranged at positions on the upper side plate corresponding to between the two arc-shaped turbofans; and a chassis (33). The bottom plate (33) is installed on the inner side of the split turbofan (32), and a groove is provided on its upper part. The bottom plate (33) is consistent with the height of the split turbofan (32) as a whole, and completely closes the inner circle side of the split turbofan (32), and completely closes the lower end of the cover shell (31) together with the split turbofan (32) and the wind guide volute (3); the circulating fan (2) is arranged on the lower left side of the mounting platform (1), and is composed of a volute-shaped air chamber and a motor. The volute-shaped air chamber is provided with an air guide outlet extending and protruding along the side wall, and the air guide outlet is connected to the motor. The air inlet pipe of the air guide volute (3) is connected and communicated; a conical cylinder (5) is mounted on the mounting platform (1) at a side away from the cover shell (31), is hollow inside, and is provided with a feed guide pipe at an angle at a tangent line on one side of its upper edge, the feed guide pipe is communicated with the upper space inside the conical cylinder (5), and a downward spiral guide groove is provided at the entrance of the feed guide pipe in the conical cylinder (5), and a discharge opening is provided at the lower part of the cone of the conical cylinder (5); an inner cylinder (51) is passed through the concentric part of the upper part of the conical cylinder (5), and is provided inside A tubular passage, the lower portion of which penetrates into the space in the upper portion of the cone of the conical cylinder (5); a discharge pipe (6), installed between the discharge port of the cover shell (31) and the feed guide pipe of the conical cylinder (5), the cover shell (31) being connected to the internal space of the conical cylinder (5); a circulating air duct (61), one end of which is connected to the upper end of the inner cylinder (51), and the other end of which is connected to the volute air chamber of the fan (2); and a spraying mechanism, arranged on the cover shell (31), for spraying mist material into the cover shell (31) through the spraying mechanism.

2. The drying device for continuous processing of precursor materials according to claim 1, characterized in that: The spraying mechanism comprises: a feed bin (4), fixedly mounted on the outer wall of the cover shell (31) on the side away from the conical cylinder (5), the inner space of which is larger at the top and smaller at the bottom, and the inner lower space of which is retracted toward one side of the cover shell (31); a feed pipe (40), arranged at the upper part of the feed bin (4), communicating with the inside of the feed bin (4), and used for connecting to an external material transfer pipe; an arc-shaped cavity plate (41), arranged at the lower part of the feed bin (4), one side of which is in contact with the outer wall of the cover shell (31), and the inner cavity of which is communicated with the inside of the feed bin (4); and spray guns (42), arranged at intervals on the arc-shaped cavity plate (4 1), the number of which is not less than three, and is composed of a distribution pipe, an air inlet joint, and a nozzle, wherein one end of the lower portion of the distribution pipe penetrates into the cavity of the arc-shaped cavity plate (41), and the nozzles of the spray gun (42) penetrate into the housing (31), and the material in the feed bin (4) is input into the housing (31) through the spray gun (42); a blocking block (44) is fixedly arranged on the upper portion of the distribution pipe of the spray gun (42); and a spacing circular block (43) is fixedly arranged on the upper portion of the distribution pipe of the spray gun (42), and its upper end is connected to the blocking block (44), so as to separate a circle of annular gap on the upper portion of the distribution pipe of the spray gun (42).

3. The drying device for continuous processing of precursor materials according to claim 2, characterized in that: The number of the feed pipes (40) is no less than two, and they are evenly distributed on the feed bin (4) at front and rear intervals.

4. The drying device for continuous processing of precursor materials according to claim 2, characterized in that: It also includes an intake valve (10), which is installed between the upper parts of the block (44), and correspondingly, two intake holes (101) are opened in the block (44) for introducing the airflow of the intake valve (10), and the intake valve (10) is provided with a plurality of airflow channels connected to the upper intake holes (101) of different block (44), and the airflow channels in the intake valve (10) are connected to the spacing circular block (43) through the two intake holes (101), and the intake valve (10) is provided with an intake connector connected to the external high-pressure airflow, and the airflow channels are all connected to the intake connector; a fixed block (102), which is symmetrically installed on the upper inner part of the spacing circular block (43) and is respectively close to the two intake holes (101) on the block (44); a check plate (103), rotatably arranged on the fixed block (102), the two check plates (103) in the same spray gun (42) are symmetrically arranged and rotate on the upper part of the spacing circular block (43), and the check plate (103) has two forms: a first state in which it rotates downward to a vertical state with the fixed block (102) and a second state in which it rotates to a straight state with the fixed block (102), at which time, one side of the two check plates (103) are both in contact with the blocking block (44), and the lower end of the air inlet hole (101) is covered by the check plate (103); a torsion spring (104), wound on the fixed block (102), one end of which is connected to the check plate (103), and is used to maintain the check plate (103) and the blocking block (44) in contact with each other.

5. The drying device for continuous processing of precursor materials according to claim 4, characterized in that: It also includes a double-shaft motor (11) fixedly mounted on a wall of the feed bin (4); and an eccentric block (111) symmetrically mounted on the output shaft of the double-shaft motor (11) and rotating synchronously with the rotation of the output shaft of the double-shaft motor (11).

6. The drying device for continuous processing of precursor materials according to claim 5, characterized in that: It also includes flow diverter blocks (13), which are evenly spaced in the arc cavity plate (41) and arranged in an arc shape along the cavity shape of the arc cavity plate (41). The internal space of the arc cavity plate (41) is divided into cavities corresponding to the number of the spray guns (42) by the flow diverter blocks (13). The lower end of the spray gun (42) penetrates into the cavity with a relative position. The flow diverter blocks (13) are arranged in a conical shape, and its tip faces the feed bin (4); and material guide protrusions (12) are distributed and arranged at the bottom of the cavity of the arc cavity plate (41). The material guide protrusions (12) are all arc-shaped, and the material guide protrusions (12) in one cavity are combined into a cluster and are respectively arranged under the spray guns (42). The ends of the material guide protrusions (12) away from the cavity opening of the arc cavity plate (41) are gathered toward the position of the spray gun (42).

7. The drying device for continuous processing of precursor materials according to claim 1, characterized in that: It also includes an arc-shaped guide block (8) which is arranged in an annular shape on the split turbofan (32), and has an air duct on its downward side, the number of which is consistent with the number of wind tunnels on the split turbofan (32), correspondingly covering the wind tunnels one by one.

8. A drying device for continuous processing of precursor materials according to claim 1 or 7, characterized in that: The chassis (33) is provided with a material lifting mechanism, which comprises: a driving motor (9) fixedly mounted at a concentric position on the bottom of the chassis (33); a roller (91) rotatably mounted at a concentric position on the inner side of the chassis (33), the lower end of which is fixedly connected to the output shaft of the driving motor (9), and a disk rack fixedly mounted on the outer side of the upper end of the roller (91); support rods (92) spaced apart on the disk rack of the roller (91), the number of which is not less than three; a sliding rod (93) slidably mounted on the support rod (92) via an elastic member, and elastically connected to the support rod (92); and a scraper (94) fixedly mounted at the lower part of the sliding rod (93), the bottom of which is in rotational contact with the arc-shaped groove on the chassis (33).

9. The drying device for continuous processing of precursor materials according to claim 1, characterized in that: It also includes a mounting seat (14), which is arranged on the top of the cover shell (31) and is concentric with the cover shell (31), and a detachable panel is embedded in the inner circle of the mounting seat (14).

Images