Drying equipment for preparing high-purity ammonium rhenate

Abstract

The invention relates to the technical field of ammonium rhenate preparation, in particular to high-purity ammonium rhenate preparation drying equipment which comprises a drying inner barrel fixedly mounted on the inner side of a drying outer barrel, the bottom of the drying outer barrel fixedly communicates with a discharging funnel, and the bottom of the drying inner barrel fixedly communicates with a water outlet funnel penetrating through the discharging funnel. A drying mechanism for grading, screening and uniformly drying ammonium rhenate particles is arranged on the inner side of the drying inner barrel, a feeding mechanism for dispersing and adding the ammonium rhenate particles into the drying inner barrel is arranged at the top of the drying outer barrel, the drying mechanism comprises a supporting vertical pipe which is arranged on the inner side of the drying inner barrel, and the bottom of the supporting vertical pipe is fixed to a water outlet funnel. According to the ammonium rhenate drying device, ammonium rhenate particles can be distributed more uniformly during drying, moisture can be rapidly and effectively removed, the drying time of ammonium rhenate is shortened, the drying efficiency of ammonium rhenate is improved, the situation that the drying effect is affected due to the fact that the ammonium rhenate particles are agglomerated and are difficult to disperse is effectively prevented, and the product quality of high-purity ammonium rhenate is improved.

Description

Technical Field

[0001] The invention relates to the technical field of ammonium rhenate preparation, and in particular to drying equipment for preparing high-purity ammonium rhenate. Background Art

[0002] During the preparation of high-purity ammonium rhenate, the generated ammonium rhenate precipitate is mainly in the form of particles. In order to ensure the purity of the prepared ammonium rhenate, it is necessary to clean the unreacted rhenic acid and other impurities in the ammonium rhenate particles, and then place the cleaned ammonium rhenate particles in a drying device for drying, thereby obtaining high-purity ammonium rhenate. The current drying equipment mainly dries the ammonium rhenate particles by constantly stirring the ammonium rhenate particles and heating the air in the equipment. However, in the early stage of drying, the humidity of the ammonium rhenate particles is relatively high, which easily leads to the agglomeration of the ammonium rhenate particles. After the ammonium rhenate particles agglomerate, it is difficult to stir them again, making it difficult for the particles sandwiched in the agglomerate to be completely dried, resulting in a significant reduction in the drying effect of the ammonium rhenate, reducing the purity of the ammonium rhenate and affecting the product quality of the high-purity ammonium rhenate. Summary of the invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a drying device for preparing high-purity ammonium rhenate, which solves the problem that the ammonium rhenate particles are easily agglomerated and difficult to disperse in the initial stage of drying, resulting in poor drying effect.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: A drying device for preparing high-purity ammonium rhenate comprises a drying inner barrel fixedly mounted on the inner side of a drying outer barrel, a discharge funnel fixedly connected to the bottom of the drying outer barrel, a water outlet funnel fixedly connected to the bottom of the drying inner barrel penetrating the discharge funnel, a drying mechanism for classifying and screening ammonium rhenate particles and drying them uniformly is arranged on the inner side of the drying inner barrel, a feeding mechanism for dispersing and adding ammonium rhenate particles to the drying inner barrel is arranged on the top of the drying outer barrel, the drying mechanism comprises a supporting vertical pipe arranged on the inner side of the drying inner barrel and fixed to the water outlet funnel at the bottom, a plurality of ventilating holes arranged on the supporting vertical pipe and distributed in a circumferential array, and a supporting A circular support plate is provided, and three annular filters are arranged on the inner side of the drying inner barrel and are distributed at intervals and rotated on the outer side of the supporting vertical pipe. The cross section of the annular filter is arranged to be trapezoidal, and the mesh openings of the three annular filters gradually decrease from top to bottom. A plurality of connecting vertical rods distributed in an annular array are fixed to the inner top of the annular filter. A stirring component for breaking up the agglomerated ammonium rhenate particles on the top annular filter is provided on the top of the supporting vertical pipe. A rotating component for synchronously driving the three annular filters to rotate and shaking the ammonium rhenate particles thereon is provided on the top of the supporting circular plate. A discharging component for simultaneously discharging the ammonium rhenate particles on the three annular filters is provided on the drying inner barrel.

[0005] As a further optimization scheme of the present invention, the stirring component includes a limiting ring seat fixed to the top of the inner side of the drying inner barrel, and a ring gear rotatably arranged on the outer side of the supporting circular plate and rotating on the limiting ring seat, a plurality of stirring racks distributed in a circular array are fixedly arranged on the inner side of the bottom of the ring gear, a transmission gear meshing with the ring gear is arranged on one side of the top of the supporting circular plate, a vertical axis 1 that rotates with the inner top wall of the drying outer barrel through a bearing is fixedly arranged at the axis center of the transmission gear, and a transmission component for driving the stirring rack to rotate intermittently through transmission is arranged on the supporting circular plate.

[0006] As a further optimization scheme of the present invention, the transmission assembly includes an annular turntable arranged in the middle of the top of the supporting circular plate, and a groove wheel rotatably arranged on one side of the annular turntable, a limiting column matching the groove wheel is fixed to one side of the bottom of the annular turntable, a vertical shaft 2 that passes through the top of the drying outer barrel and rotates with it through a bearing is fixed at the axis of the groove wheel, and a transmission belt 1 is arranged between the vertical shaft 2 and the vertical shaft 1 through a pulley.

[0007] As a further optimization scheme of the present invention, the rotating assembly includes a connecting circular plate arranged on the top of the supporting vertical pipe, and the connecting circular plate is fixed to the connecting vertical rod located on the top annular filter screen, and a connecting vertical shaft is fixedly arranged on the top of the connecting circular plate, and the top of the connecting vertical shaft passes through the supporting circular plate and is rotatably connected to the top wall of the drying outer barrel through a bearing, a driven gear is fixed to the top of the connecting vertical shaft, and a connecting ring fixed to the annular turntable is fixed to the bottom of the driven gear.

[0008] As a further optimization scheme of the present invention, a servo motor is fixedly installed on one side of the top of the drying outer barrel, and a transmission vertical shaft that passes through the top of the drying outer barrel and rotates with it through a bearing is fixedly set on the output shaft of the servo motor, and a driving gear that meshes with the driven gear is fixedly set on the transmission vertical shaft.

[0009] As a further optimization scheme of the present invention, the unloading assembly includes a plurality of discharge troughs distributed in a circumferential array and arranged at the bottom of the annular filter screen and opened on the drying inner barrel, annular baffles respectively matching the three annular filter screens are slidably arranged on the drying inner barrel, and arc-shaped baffles sliding with the plurality of discharge troughs are respectively fixed to the inner side walls of the annular baffles, a plurality of equidistantly arranged connecting rods are fixed between two adjacent annular baffles, and an annular frame sliding with the drying outer barrel is fixed on the annular baffle located at the top.

[0010] As a further optimization scheme of the present invention, driving members for driving the annular baffle to move and fixed to the drying outer barrel are respectively provided at both ends of the bottom of the annular frame, and a protective cover fixed to the drying outer barrel is provided on the outside of the driving member.

[0011] As a further optimization scheme of the present invention, the feeding mechanism includes a feeding funnel arranged on the top of the drying outer barrel, and four feeding pipes distributed in a circumferential array fixedly connected to the bottom of the feeding funnel, the bottom of the feeding pipe passes through the top of the drying outer barrel and extends to be fixedly connected to the supporting circular plate, a limiting circular plate is fixed on the inner side of the feeding funnel, and a movable circular plate that rotates with the feeding funnel is arranged on the limiting circular plate, a rotating vertical shaft is fixed to the bottom of the movable circular plate, and the bottom of the rotating vertical shaft passes through the limiting circular plate and the feeding pipe and is rotatably connected to the outer top wall of the drying outer barrel through a bearing, and a transmission belt 2 is arranged between the bottom of the rotating vertical shaft and the top of the second vertical shaft through a pulley transmission.

[0012] As a further optimization scheme of the present invention, two symmetrically arranged feed holes 1 are opened on the movable circular plate, and feed holes 2 matching the four feed pipes are respectively opened on the limiting circular plate, and the two feed holes 1 are matched with two opposite feed holes 2 respectively.

[0013] As a further optimization scheme of the present invention, a constant temperature hot air blower is fixedly installed on the drying outer barrel, and an air inlet pipe that penetrates the drying outer barrel, the water outlet funnel and the supporting vertical pipe is fixed to the output end of the constant temperature hot air blower.

[0014] By means of the above technical solution, the present invention provides a drying device for preparing high-purity ammonium rhenate, which has at least the following beneficial effects compared with the prior art: 1. The present invention screens and grades the ammonium rhenate particles and then dries them by setting a drying mechanism, adding the ammonium rhenate particles to the annular filter in the drying inner barrel, and making the ammonium rhenate particles more evenly distributed during drying by the cooperation of the stirring component and the rotating component, so that the moisture can be removed quickly and effectively, the drying time is shortened, the drying efficiency of the ammonium rhenate is improved, and the situation that the ammonium rhenate particles are difficult to stir and affect the drying effect due to agglomeration of the ammonium rhenate particles is effectively prevented, thereby improving the product quality of high-purity ammonium rhenate.

[0015] 2. The present invention adds the ammonium rhenate particles to the annular filter in the drying inner barrel by setting a feeding mechanism. The ammonium rhenate in the feeding funnel is connected to the two opposite feeding holes 2 respectively through the rotation of the movable circular plate, so that the ammonium rhenate particles are successively added to the feeding pipe and then fall around the top of the annular filter at the top, so that the ammonium rhenate particles are added more dispersedly, which can ensure a more uniform distribution of the ammonium rhenate particles, reduce the agglomeration rate of the ammonium rhenate particles, and improve the uniformity and stability of the subsequent drying process.

[0016] 3. The present invention simultaneously discharges the ammonium rhenate particles dried on three annular filter screens by setting a discharge assembly. By pulling the annular baffle upward, the annular baffle slides upward in the discharge chute, so that the ammonium rhenate particles lack obstruction and slide from the annular filter screen to the discharge funnel and then are discharged, which helps to discharge the dried ammonium rhenate more conveniently and thoroughly, and avoids the situation where the ammonium rhenate remains in the drying equipment and affects the subsequent drying operation and causes waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a front perspective cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the internal structure of the drying outer barrel of the present invention; Figure 4 It is a schematic diagram of the structure of the stirring component of the present invention; Figure 5 It is a structural schematic diagram of the rotating assembly of the present invention; Figure 6 It is a schematic diagram of the open state of the blanking assembly of the present invention; Figure 7 It is an exploded schematic diagram of the feeding mechanism of the present invention; Figure 8 for Figure 2 Schematic diagram of the enlarged structure of part A.

[0018] In the figure: 1. Drying outer barrel; 2. Drying inner barrel; 3. Discharging funnel; 4. Drying mechanism; 41. Supporting vertical pipe; 42. Ventilation hole; 43. Supporting circular plate; 44. Annular filter; 45. Connecting vertical rod; 46, stirring assembly; 461, limiting ring seat; 462, ring gear; 463, stirring frame; 464, transmission gear; 465, vertical axis 1; 466, transmission assembly; 4661, annular turntable; 4662, groove wheel; 4663, limit column; 4664, vertical shaft 2; 4665, transmission belt 1; 47, rotating assembly; 471, connecting circular plate; 472, connecting vertical shaft; 473, driven gear; 474, connecting ring; 475, servo motor; 476, driving gear; 48, unloading assembly; 481, discharging chute; 482, annular baffle; 483, connecting rod; 484, annular frame; 485, driving member; 5. Feeding mechanism; 51. Feeding hopper; 52. Feeding pipe; 53. Position limiting circular plate; 54. Movable circular plate; 55. Feeding hole 1; 56. Feeding hole 2; 57. Rotating vertical axis; 58. Transmission belt 2; 6. Water outlet funnel; 7. Constant temperature hot air blower; 8. Air inlet pipe. DETAILED DESCRIPTION

[0019] 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.

[0020] First embodiment The main purpose of drying ammonium rhenate is to remove moisture and ensure the purity and stability of the final product. At present, ammonium rhenate particles are dried by drying equipment. Since the ammonium rhenate particles are prone to agglomeration in the early stage of drying, it will affect the subsequent drying effect. In order to avoid the situation where the ammonium rhenate particles are difficult to disperse and affect the drying effect, the drying efficiency of ammonium rhenate is improved, such as Figure 1 - Figure 4 and Figure 8 As shown, this embodiment provides a drying device for preparing high-purity ammonium rhenate, which consists of a drying outer barrel 1, a drying inner barrel 2, a discharge funnel 3, a water discharge funnel 6, a drying mechanism 4 and a feeding mechanism 5. The drying inner barrel 2 is fixedly installed on the inner side of the top of the drying outer barrel 1, and the discharge funnel 3 and the water discharge funnel 6 are respectively fixedly connected to the bottom of the drying outer barrel 1 and the drying inner barrel 2. The discharge funnel 3 passes through the water discharge funnel 6 and is fixedly connected thereto. A box for collecting high-purity ammonium rhenate can also be provided at the bottom of the discharge funnel 3, and a box for collecting drained water can also be provided at the bottom of the water discharge funnel 6. The drying mechanism 4 is arranged on the inner side of the drying inner barrel 2 and is used to grade and screen the ammonium rhenate particles and dry them thoroughly respectively.

[0021] In order to make the ammonium rhenate particles more evenly distributed during drying, the moisture can be removed quickly and effectively, the drying time can be shortened, and the drying efficiency of the ammonium rhenate is improved. The drying mechanism 4 includes a support vertical pipe 41 arranged on the inner side of the drying inner barrel 2 and fixed to the water outlet funnel 6 at the bottom, a plurality of ventilating holes 42 arranged in a circumferential array on the support vertical pipe 41, and a support circular plate 43 arranged on the top of the inner side of the drying inner barrel 2. The support circular plate 43 can also separate the top and bottom of the inner side of the drying inner barrel 2. The inner side of the drying inner barrel 2 is rotatably provided with three annular filter screens 44 distributed at intervals and rotating on the outer side of the support vertical pipe 41. The cross section of the annular filter screen 44 is set to be trapezoidal, and the inclination of the annular filter screen 44 is The surface inclination angle is set to 5°, and the mesh size of the three annular filters 44 gradually decreases from top to bottom. After the ammonium rhenate particles are added to the drying inner barrel 2, they directly fall on the annular filter 44 located at the top. The smaller ammonium rhenate particles pass through the first annular filter 44 and fall on the second annular filter 44. The smaller ammonium rhenate particles pass through the second annular filter 44 and fall on the third annular filter 44. At the same time, the annular filter 44 also has a certain drainage effect on the ammonium rhenate particles. The drained water is discharged through the water outlet funnel 6. A plurality of connecting vertical rods 45 distributed in a circular array are fixed to the inner top of the annular filter 44. The two annular filters 44 are fixedly connected to each other by the connecting vertical rods 45.

[0022] A constant temperature hot air blower 7 is fixedly installed on the drying outer barrel 1, and an air inlet pipe 8 that penetrates the drying outer barrel 1, the water outlet funnel 6 and the supporting vertical pipe 41 is fixed to the output end of the constant temperature hot air blower 7, and the drying outer barrel 1, the water outlet funnel 6 and the supporting vertical pipe 41 are all sealed and fixedly connected to the air inlet pipe 8. Since the suitable drying temperature of high-purity ammonium rhenate is usually between 60°C and 80°C, this temperature range can effectively remove moisture while avoiding decomposition or damage of ammonium rhenate. The constant temperature hot air blower 7 heats the air and maintains a constant temperature, thereby providing hot air at a constant temperature to ensure the stability of the drying of high-purity ammonium rhenate.

[0023] In order to ensure that the ammonium rhenate particles do not clump during drying and to make the ammonium rhenate particles evenly distributed to facilitate the subsequent drying process, a stirring assembly 46 for breaking up the ammonium rhenate particles on the top annular filter 44 is provided at the top of the support vertical pipe 41. The stirring assembly 46 includes a limiting ring seat 461 fixed to the top of the inner side of the drying inner barrel 2, and a ring gear 462 rotatably arranged on the outer side of the support circular plate 43 and rotating on the limiting ring seat 461. The inner side of the bottom of the ring gear 462 is provided with a ring gear 462. A plurality of stirring racks 463 distributed in a circular array are fixedly arranged. When the ring gear 462 rotates on the outer side of the supporting circular plate 43, the stirring rack 463 is driven to rotate to break up the agglomerated ammonium rhenate particles, thereby preventing the agglomeration of the ammonium rhenate particles and making it difficult to completely dry the particles sandwiched in the middle of the agglomerates. A transmission gear 464 meshing with the ring gear 462 is arranged on one side of the top of the supporting circular plate 43, and a vertical shaft 465 rotating with the inner top wall of the drying outer barrel 1 through a bearing is fixedly arranged at the axis center of the transmission gear 464.

[0024] A transmission assembly 466 for driving the stirring frame 463 to intermittently rotate through transmission is arranged on the supporting circular plate 43, and the transmission assembly 466 includes an annular turntable 4661 arranged in the middle of the top of the supporting circular plate 43, and a groove wheel 4662 rotatably arranged on one side of the annular turntable 4661, a limiting column 4663 matching the groove wheel 4662 is fixed to the bottom side of the annular turntable 4661, and a vertical shaft 2 4664 that passes through the top of the drying outer barrel 1 and rotates with it through a bearing is fixed at the axis center of the groove wheel 4662, and a transmission belt 1 4665 is arranged between the vertical shaft 2 4664 and the vertical shaft 1 465 through a pulley transmission.

[0025] When the annular turntable 4661 rotates, the annular turntable 4661 drives the groove wheel 4662 to rotate intermittently through the limiting column 4663, the groove wheel 4662 drives the vertical shaft 2 4664 to rotate, the vertical shaft 2 4664 drives the vertical shaft 1 465 to rotate through the transmission belt 1 4665, the vertical shaft 1 465 drives the annular gear 462 to rotate on the limiting ring seat 461 through the transmission gear 464, the annular gear 462 drives the stirring rack 463 to rotate intermittently, the stirring rack 463 intermittently breaks up the agglomerated ammonium rhenate particles on the top annular filter 44, so as to control the intensity of the breaking up, reduce the damage of the ammonium rhenate particles during the breaking up process, and maintain the integrity of the particles.

[0026] Second embodiment In order to ensure the stability of the annular filter 44 during the rotation process and extend the service life of the equipment, Figure 5As shown, in this embodiment, a rotating assembly 47 for synchronously driving three annular filter screens 44 to rotate and shake the ammonium rhenate particles thereon is provided at the top of the supporting circular plate 43. The specific implementation method is that the rotating assembly 47 includes a connecting circular plate 471 arranged at the top of the supporting vertical tube 41, and the connecting circular plate 471 is fixed to the connecting vertical rod 45 located on the top annular filter screen 44, and a connecting vertical shaft 472 fixedly arranged at the top of the connecting circular plate 471, and the top of the connecting vertical shaft 472 penetrates the supporting circular plate 43 and is rotatably connected to the inner top wall of the drying outer barrel 1 through a bearing, a driven gear 473 is fixed to the top of the connecting vertical shaft 472, and a connecting ring 474 fixed to the annular turntable 4661 is fixed to the bottom of the driven gear 473, and a servo motor 475 is fixedly installed on one side of the top of the drying outer barrel 1, and a transmission vertical shaft that penetrates the top of the drying outer barrel 1 and rotates with it through a bearing is fixedly arranged on the output shaft of the servo motor 475, and a driving gear 476 meshing with the driven gear 473 is fixedly arranged on the transmission vertical shaft.

[0027] By starting the servo motor 475, the transmission vertical shaft is driven to rotate, and the transmission vertical shaft drives the driven gear 473 to rotate through the driving gear 476. The driven gear 473 drives the connecting vertical shaft 472 at its bottom to rotate, and the connecting vertical shaft 472 drives the connecting circular plate 471 at its bottom to rotate. The connecting circular plate 471 drives the connecting vertical rod 45 at its bottom to rotate, and the connecting vertical rod 45 drives the annular filter screen 44 at the top to rotate, thereby driving the three annular filter screens 44 to rotate at the same time and shaking the ammonium rhenate particles thereon, so that the ammonium rhenate particles can be dried more thoroughly.

[0028] Third embodiment In order to make the dried ammonium rhenate discharge more thoroughly and avoid the ammonium rhenate residue in the drying equipment affecting the subsequent drying operation and causing waste, such as Figure 6 As shown, in this embodiment, a material discharge assembly 48 for simultaneously discharging the ammonium rhenate particles on the three annular filter screens 44 is provided on the drying inner barrel 2. The specific implementation method is that the material discharge assembly 48 includes a plurality of discharge troughs 481 arranged at the bottom of the annular filter screen 44 and opened on the drying inner barrel 2. Annular baffles 482 respectively matching the three annular filter screens 44 are slidably provided on the drying inner barrel 2, and arc-shaped baffles sliding with the plurality of discharge troughs 481 are respectively fixed to the inner side walls of the annular baffles 482, and a plurality of equidistantly arranged connecting rods 483 are fixed between two adjacent annular baffles 482. An annular frame 484 sliding with the drying outer barrel 1 is fixed to the annular baffle 482 at the top, and driving members 485 for driving the annular baffle 482 to move and fixed to the drying outer barrel 1 are respectively provided at both ends of the bottom of the annular frame 484, and a protective cover fixed to the drying outer barrel 1 is provided on the outer side of the driving member 485.

[0029] After the ammonium rhenate particles are dried, the annular frame 484 is pushed upward by the driving member 485, and the annular frame 484 drives the annular baffle 482 located at the top to slide upward, thereby driving the three annular baffles 482 to move upward at the same time, and the annular baffle 482 is separated from the discharge trough 481, so that the ammonium rhenate particles on the annular filter 44 roll to the bottom of the discharge funnel 3 and are discharged.

[0030] Fourth embodiment In order to ensure a more uniform distribution of ammonium rhenate particles, the agglomeration rate of ammonium rhenate particles is reduced, which is conducive to more thorough drying. Figure 7 As shown, the feeding mechanism 5 of this embodiment is arranged at the top of the drying outer barrel 1 and is used to disperse and add ammonium rhenate particles into the drying inner barrel 2. The specific implementation method is that the feeding mechanism 5 includes a feeding funnel 51 arranged at the top of the drying outer barrel 1, and four feeding pipes 52 distributed in a circumferential array fixedly connected to the bottom of the feeding funnel 51. The tops of the four feeding pipes 52 are fixed to each other and connected to the bottom of the feeding funnel 51. The bottom of the feeding pipe 52 passes through the top of the drying outer barrel 1 and extends to be fixedly connected to the supporting circular plate 43. A limiting circular plate 53 is fixed on the inner side of the feeding funnel 51. A movable circular plate 54 is provided to rotate with the feed hopper 51, and two symmetrically arranged feed holes 1 55 are provided on the movable circular plate 54. Feed holes 2 56 matching the four feed pipes 52 are respectively provided on the limiting circular plate 53, and the two feed holes 1 55 are respectively matched with two opposite feed holes 2 56. A rotating vertical shaft 57 is fixed to the bottom of the movable circular plate 54, and the bottom of the rotating vertical shaft 57 penetrates the limiting circular plate 53 and the feed pipe 52 and is rotatably connected to the outer top wall of the drying outer barrel 1 through a bearing, and a transmission belt 2 58 is provided between the bottom of the rotating vertical shaft 57 and the top of the vertical shaft 2 4664 through a pulley transmission.

[0031] When the movable circular plate 54 rotates a certain angle, the two feed holes 1 55 are connected with the two corresponding feed holes 2 56 respectively, and the ammonium rhenate particles in the feed funnel 51 enter the two corresponding feed pipes 52 respectively. When the movable circular plate 54 rotates a certain angle again, the two feed holes 1 55 are connected with the other two corresponding feed holes 2 56 respectively, and the ammonium rhenate particles enter the other two corresponding feed pipes 52 respectively, so that the ammonium rhenate particles fall onto the annular filter 44 at the top of the drying inner barrel 2 through the four feed pipes 52, thereby realizing the dispersed feeding of the ammonium rhenate particles, which is conducive to more uniform and thorough subsequent drying.

[0032] The invention disperses and feeds the ammonium rhenate particles, stirs up the existing ammonium rhenate particles, and then screens and grades the ammonium rhenate particles and performs constant temperature drying, so that the ammonium rhenate is more evenly distributed during drying, moisture can be removed quickly and effectively, the drying time is shortened, and the drying efficiency of the ammonium rhenate is improved.

[0033] In actual use of the drying device, the constant temperature hot air blower 7 is first turned on, and the constant temperature hot air blower 7 inputs hot air into the support vertical pipe 41 through the air inlet pipe 8, and the hot air enters the drying inner barrel 2 through the ventilation hole 42 at the top of the support vertical pipe 41. When the temperature in the drying inner barrel 2 reaches the set value, the constant temperature hot air blower 7 adjusts the working state of the heating element to keep the temperature in the drying inner barrel 2 constant; Then, the ammonium rhenate particles to be dried are added to the feed hopper 51, and the servo motor 475 is started at the same time. The output shaft of the servo motor 475 drives the transmission vertical shaft to rotate, and the transmission vertical shaft drives the driving gear 476 at the bottom thereof to rotate, and the driving gear 476 drives the driven gear 473 meshing therewith to rotate, and the driven gear 473 drives the annular turntable 4661 to rotate through the connecting ring 474, and the annular turntable 4661 drives the limiting column 4663 to rotate around the driven gear 473, and the limiting column 4663 drives the groove wheel 4662 to rotate intermittently, and the groove wheel 4662 drives the vertical shaft 2 4664 at its axis to rotate, and the vertical shaft 2 466 The transmission belt 2 58 at the top drives the rotating vertical shaft 57 to start intermittent rotation. The rotating vertical shaft 57 drives the movable circular plate 54 at the top to rotate a certain angle, and then stops for a while, and at the same time, the two feeding holes 1 55 are connected with the two corresponding feeding holes 2 56 respectively, and the ammonium rhenate particles in the feeding funnel 51 enter the two corresponding feeding pipes 52 respectively. The movable circular plate 54 rotates a certain angle again, and the two feeding holes 1 55 are connected with the other two corresponding feeding holes 2 56 respectively, and the ammonium rhenate particles enter the other two corresponding feeding pipes 52 respectively, so that the ammonium rhenate particles fall onto the annular filter screen 44 at the top of the drying inner barrel 2 through the four feeding pipes 52 respectively; At the same time, when the second vertical shaft 4664 rotates intermittently, the transmission belt 1 4665 drives the first vertical shaft 465 to rotate, and the first vertical shaft 465 drives the ring gear 462 to rotate on the limiting ring seat 461 through the transmission gear 464, and the ring gear 462 drives the stirring rack 463 to rotate intermittently, and the stirring rack 463 intermittently disperses the ammonium rhenate particles on the top annular filter 44, and at the same time, the smaller ammonium rhenate particles pass through the first annular filter 44 and fall onto the second annular filter 44, and the smaller ammonium rhenate particles pass through the second annular filter 44 and fall onto the third annular filter 44, so that the ammonium rhenate particles are dispersed on the three annular filters 44; When the driven gear 473 rotates, the connecting vertical shaft 472 at the bottom thereof is driven to rotate, the connecting vertical shaft 472 drives the connecting circular plate 471 at the bottom thereof to rotate, the connecting circular plate 471 drives the connecting vertical rod 45 at the bottom thereof to rotate, and the connecting vertical rod 45 drives the annular filter screen 44 at the top to rotate, thereby driving the three annular filter screens 44 to rotate simultaneously and shake the ammonium rhenate particles thereon evenly, and the ammonium rhenate particles are evenly dried by hot air at a constant temperature to obtain high-purity ammonium rhenate; Then, a high-purity ammonium rhenate collection box is placed at the bottom of the discharge funnel 3, and then the two driving members 485 are started. The driving member 485 pushes the annular frame 484 upward, and the annular frame 484 drives the annular baffle 482 located at the top to slide upward, thereby driving the three annular baffles 482 to move upward at the same time, and the annular baffle 482 is separated from the discharge trough 481, so that the ammonium rhenate particles on the annular filter 44 roll to the bottom of the discharge funnel 3 and are discharged into the collection box.

[0034] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drying device for preparing high-purity ammonium rhenate, comprising a drying inner barrel (2) fixedly mounted on the inner side of a drying outer barrel (1), characterized in that: The bottom of the drying outer barrel (1) is fixedly connected to a discharge funnel (3), the bottom of the drying inner barrel (2) is fixedly connected to a water discharge funnel (6) penetrating the discharge funnel (3), the inner side of the drying inner barrel (2) is provided with a drying mechanism (4) for classifying and screening the ammonium rhenate particles and drying them uniformly, and the top of the drying outer barrel (1) is provided with a feeding mechanism (5) for dispersing and adding the ammonium rhenate particles to the drying inner barrel (2); The drying mechanism (4) comprises a support vertical pipe (41) arranged inside the drying inner barrel (2) and fixed at the bottom to the water outlet funnel (6), a plurality of ventilation holes (42) arranged in a circumferential array on the support vertical pipe (41), and a support circular plate (43) arranged at the top of the inner side of the drying inner barrel (2), and three annular filter screens (44) arranged at intervals and rotating outside the support vertical pipe (41) are rotatably arranged inside the drying inner barrel (2), the cross section of the annular filter screens (44) is arranged in a trapezoidal shape, and the mesh size of the three annular filter screens (44) gradually decreases from top to bottom. A plurality of connecting vertical rods (45) arranged in a circular array are fixed to the inner top of the annular filter (44); a stirring assembly (46) for breaking up the agglomerated ammonium rhenate particles on the top annular filter (44) is arranged on the top of the supporting vertical pipe (41); a rotating assembly (47) for synchronously driving the three annular filters (44) to rotate and shake the ammonium rhenate particles thereon is arranged on the top of the supporting circular plate (43); and a discharging assembly (48) for simultaneously discharging the ammonium rhenate particles on the three annular filters (44) is arranged on the drying inner barrel (2).

2. A drying device for preparing high-purity ammonium rhenate according to claim 1, characterized in that: The agitating assembly (46) comprises a limiting ring seat (461) fixed to the top of the inner side of the drying inner barrel (2), and a ring gear (462) rotatably arranged on the outer side of the supporting circular plate (43) and rotating on the limiting ring seat (461); a plurality of agitating frames (463) distributed in a circumferential array are fixedly arranged on the inner side of the bottom of the ring gear (462); and a transmission gear (464) meshing with the ring gear (462) is arranged on one side of the top of the supporting circular plate (43); A vertical shaft (465) is fixedly arranged at the axis of the transmission gear (464) and is rotatable with the inner top wall of the drying outer barrel (1) via a bearing. A transmission assembly (466) is arranged on the supporting circular plate (43) and is used to drive the stirring frame (463) to rotate intermittently through transmission.

3. A drying device for preparing high-purity ammonium rhenate according to claim 2, characterized in that: The transmission assembly (466) comprises an annular turntable (4661) arranged in the middle of the top of the supporting circular plate (43), and a groove wheel (4662) rotatably arranged on one side of the annular turntable (4661); a limiting column (4663) matching the groove wheel (4662) is fixed to one side of the bottom of the annular turntable (4661); a second vertical shaft (4664) penetrating the top of the drying outer barrel (1) and rotating with the second vertical shaft (4664) via a bearing is fixed at the axis of the groove wheel (4662); and a transmission belt (4665) is arranged between the second vertical shaft (4664) and the first vertical shaft (465) via a pulley.

4. A drying device for preparing high-purity ammonium rhenate according to claim 3, characterized in that: The rotating assembly (47) comprises a connecting circular plate (471) arranged on the top of the supporting vertical tube (41), wherein the connecting circular plate (471) is fixed to a connecting vertical rod (45) located on the top annular filter (44), and a connecting vertical shaft (472) fixedly arranged on the top of the connecting circular plate (471), wherein the top of the connecting vertical shaft (472) passes through the supporting circular plate (43) and is rotatably connected to the inner top wall of the drying outer barrel (1) via a bearing, and a driven gear (473) is fixed to the top of the connecting vertical shaft (472), and a connecting circular ring (474) fixed to the annular rotating disk (4661) is fixed to the bottom of the driven gear (473).

5. A drying device for preparing high-purity ammonium rhenate according to claim 4, characterized in that: A servo motor (475) is fixedly mounted on one side of the top of the drying outer barrel (1); a transmission vertical shaft that passes through the top of the drying outer barrel (1) and rotates with the transmission vertical shaft via a bearing is fixedly arranged on the output shaft of the servo motor (475); a driving gear (476) that meshes with the driven gear (473) is fixedly arranged on the transmission vertical shaft.

6. A drying device for preparing high-purity ammonium rhenate according to claim 1, characterized in that: The unloading assembly (48) comprises a plurality of discharge troughs (481) arranged at the bottom of the annular filter (44) and opened on the drying inner barrel (2) and distributed in a circumferential array; annular baffles (482) respectively matching the three annular filter screens (44) are slidably arranged on the drying inner barrel (2); arc-shaped baffles sliding with the plurality of discharge troughs (481) are respectively fixed to the inner side walls of the annular baffles (482); a plurality of equidistantly arranged connecting rods (483) are fixed between two adjacent annular baffles (482); and an annular frame (484) sliding with the drying outer barrel (1) is fixed to the annular baffle (482) at the top.

7. A drying device for preparing high-purity ammonium rhenate according to claim 6, characterized in that: Driving members (485) are respectively provided at both ends of the bottom of the annular frame (484) to drive the annular baffle (482) to move and to be fixed to the drying outer barrel (1). A protective cover fixed to the drying outer barrel (1) is provided on the outside of the driving member (485).

8. A drying device for preparing high-purity ammonium rhenate according to claim 3, characterized in that: The feeding mechanism (5) comprises a feeding hopper (51) arranged at the top of the drying outer barrel (1), and four feeding pipes (52) arranged in a circumferential array and fixedly connected to the bottom of the feeding hopper (51). The bottom of the feeding pipe (52) penetrates the top of the drying outer barrel (1) and extends to be fixedly connected to the supporting circular plate (43). A limiting circular plate (53) is fixed on the inner side of the feeding hopper (51). A movable circular plate (54) is arranged on the limiting circular plate (53) to rotate with the feeding hopper (51). A rotating vertical shaft (57) is fixed at the bottom of the movable circular plate (54). The bottom of the rotating vertical shaft (57) penetrates the limiting circular plate (53) and the feeding pipe (52) and is rotatably connected to the outer top wall of the drying outer barrel (1) via a bearing. A transmission belt (58) is arranged between the bottom of the rotating vertical shaft (57) and the top of the second vertical shaft (4664) via a pulley.

9. A drying device for preparing high-purity ammonium rhenate according to claim 8, characterized in that: The movable circular plate (54) is provided with two symmetrically arranged feed holes 1 (55), and the limiting circular plate (53) is provided with feed holes 2 (56) respectively matched with the four feed pipes (52), and the two feed holes 1 (55) are matched with the two opposite feed holes 2 (56) respectively.

10. The drying equipment for preparing high-purity ammonium rhenate according to claim 1, characterized in that: A constant temperature hot air blower (7) is fixedly mounted on the drying outer barrel (1), and an air inlet pipe (8) penetrating the drying outer barrel (1), the water outlet funnel (6) and the supporting vertical pipe (41) is fixedly mounted on the output end of the constant temperature hot air blower (7).

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