Fluidized bed aluminum hydroxide feeding system for aluminum fluoride production line

Abstract

This application relates to the technical field of storage devices, in particular to a fluidized bed aluminum hydroxide feeding system for an aluminum fluoride production line, which includes a bracket and a screening assembly. The screening assembly includes a screening disc and a first driving member. The screening disc is horizontally arranged and rotatably connected to the bracket. A first screening groove is formed on the upper surface of the screening disc along a spiral line, and screening holes are formed in the first screening groove. An aggregate bucket is arranged below the screening disc; the first driving member is used to drive the screening disc to rotate in one direction; and a blanking assembly, the blanking assembly includes a first pipeline, the first pipeline is communicated with the aggregate bucket and extends obliquely downward into the fluidized bed. A plurality of discharge ports are formed on the first pipeline, and a control assembly is arranged at each discharge port; the designed fluidized bed aluminum hydroxide feeding system for the aluminum fluoride production line screens the materials entering the fluidized bed through the screening assembly, and evenly discharges the materials into the fluidized bed through the blanking assembly, avoiding the occurrence of dead bed phenomenon.

Description

Technical Field

[0001] This application relates to the technical field of storage devices, and particularly to a fluidized bed aluminum hydroxide feeding system for an aluminum fluoride production line. Background Art

[0002] Aluminum hydroxide plays a key raw material role in the preparation of aluminum fluoride. Common preparation methods such as the wet hydrofluoric acid method, the dry hydrofluoric acid method, and the fluorosilicic acid method. In these methods, aluminum hydroxide mainly serves as a reactant providing an aluminum source and participates in the chemical reaction to produce aluminum fluoride. Through different process routes, aluminum fluoride products with different physical and chemical properties can be obtained to meet the needs of different application fields;

[0003] In the production line of aluminum fluoride, the fluidized bed technology plays a crucial role, which is mainly reflected in the following aspects: gas-solid reaction, improving reaction efficiency, temperature control, preventing blockage, etc.;

[0004] Since the fluidized bed blows the materials up through air flow for reaction, when adding aluminum hydroxide to the fluidized bed, on the one hand, due to the size of the raw materials themselves or the storage problem of aluminum hydroxide, large-particle materials enter the fluidized bed. The larger-particle aluminum hydroxide gradually accumulates in the fluidized bed over time, resulting in the dead-bed phenomenon of the fluidized bed. On the other hand, improper feeding methods causing raw material accumulation will also cause the dead-bed phenomenon of the fluidized bed, thereby leading to the shutdown of the production line and causing significant losses. Summary of the Invention

[0005] In order to avoid the dead-bed of the fluidized bed, this application provides a fluidized bed aluminum hydroxide feeding system for an aluminum fluoride production line, adopting the following technical solutions:

[0006] A fluidized bed aluminum hydroxide feeding system for an aluminum fluoride production line, including a bracket;

[0007] A screening assembly for screening aluminum hydroxide, the screening assembly includes a screening disc and a first driving member. The screening disc is horizontally arranged and rotatably connected to the bracket. A first screening groove is formed along a spiral line on the upper surface of the screening disc. The first screening groove penetrates the side wall of the screening disc. A plurality of screening holes penetrating the screening disc are formed in the first screening groove in the vertical direction. An aggregate bucket for collecting the materials screened by the screening disc is arranged below the screening disc. The aggregate bucket is installed on the bracket; the first driving member is installed on the bracket for driving the screening disc to rotate along the divergent direction of the first screening groove;

[0008] and a blanking component for feeding the materials collected by the aggregate bucket into the fluidized bed. The blanking component includes a first pipeline. One end of the first pipeline is communicated with the discharge end of the aggregate bucket, and the other end extends obliquely downward into the fluidized bed. A plurality of discharge ports are formed in the bottom wall of a section of the first pipeline located in the fluidized bed. The plurality of discharge ports are arrayed along the long side direction of the first pipeline, and a control component for controlling the opening and closing of the discharge port is provided at each discharge port.

[0009] Further, the screening component further includes a buckle cover covering the surface of the screening disc. The buckle cover is detachably installed on the screening disc, and a blanking port communicated with the first screening groove is formed in the buckle cover.

[0010] Further, the screening component further includes a collection ring sleeved on the circumferential side of the screening disc. The collection ring is fixed on the support. The screening disc is coaxially and rotationally connected with the collection ring. An annular collection groove is formed in the inner wall of the collection ring, and the first screening groove is communicated with the collection groove.

[0011] Further, a heating pad is embedded in the inner wall of the first screening groove.

[0012] Further, it further includes a crushing component arranged at the bottom of the first screening groove for crushing larger particles. The crushing component includes two crushing rollers and two second driving parts. A second screening groove with the same vertical projection as the first screening groove is formed in the screening disc below the first screening groove. The screening holes penetrate through the second screening groove. An installation groove communicated with the second screening groove is formed at the bottom of the first screening groove. The crushing rollers are horizontally and rotationally installed in the installation groove. The second driving parts are installed on the screening disc to drive the crushing rollers to rotate. The two crushing rollers are arranged in parallel.

[0013] Further, it further includes a dispersing component for dispersing the materials in the first screening groove. The dispersing component includes a first rotating rod and a dispersing rod. The first rotating rod is vertically arranged in the first screening groove, and the first rotating rod is coaxially and rotationally connected to the buckle cover. A plurality of dispersing rods are arranged on the circumferential wall of the first rotating rod;

[0014] A plurality of the dispersing components are arranged along the meridian direction of the screening disc. A plurality of the dispersing components on the same meridian of the screening disc form a column, and multiple columns are arranged on the screening disc;

[0015] The first rotating rod is driven to rotate by a first driving component.

[0016] Further, the first driving assembly includes an internal gear ring, a plurality of self-rotating gears, a plurality of second rotating rods, and a plurality of third rotating rods. The internal gear ring is coaxially embedded in the inner wall of the collecting ring. The second rotating rods are coaxially and vertically rotatably connected to the buckle cover. The self-rotating gears are coaxially fixed on the second rotating rods and mesh with the internal gear ring. The third rotating rods are arranged along the meridian direction of the screening disc and are coaxially rotatably connected to the buckle cover. The second rotating rods and the third rotating rods are linked by bevel gear sets. The first rotating rod is linked to the third rotating rods by a bevel gear set;

[0017] One of the self-rotating gears, one of the second rotating rods, and one of the third rotating rods jointly drive one row of the dispersing assemblies to work.

[0018] Further, it further includes a blanking assembly that connects the aggregate bucket and the first pipeline. The blanking assembly includes a blanking pipe and a fourth rotating rod. The blanking pipe is fixed below the aggregate bucket and is coaxial with the screening disc. The inner diameter of the blanking pipe has two sections, and the inner diameter expands in the vertically downward direction. One end of the fourth rotating rod is coaxially fixed to the screening disc, and the other end extends into the blanking pipe. A spiral guiding groove is formed on the peripheral wall of the fourth rotating rod, and the spiral direction of the spiral guiding groove from top to bottom is the same as the rotating direction of the screening disc;

[0019] A movable plug is sleeved on the fourth rotating rod. The outer diameter of the movable plug is the same as the minimum inner diameter of the blanking pipe. The movable plug is frictionally connected to the fourth rotating rod. A movable rod is arranged on the movable plug along a direction perpendicular to the axis of the fourth rotating rod. The movable rod is elastically slidably connected to the movable plug and can pass through the inner and outer walls of the movable plug. In the normal state, the movable plug has a tendency to move towards the fourth rotating rod side;

[0020] First guiding grooves and second guiding grooves are respectively formed on the inner wall of the blanking pipe in the vertical direction, and both the first guiding grooves and the second guiding grooves pass through different inner diameter sections of the blanking pipe. The linear distance between the first guiding grooves and the axis of the fourth rotating rod is less than the linear distance between the second guiding grooves and the axis of the fourth rotating rod;

[0021] At the bottom end of the first guiding groove, a third guiding groove that connects the first guiding groove and the second guiding groove is formed with the linear distance between the side of the first guiding groove away from the fourth rotating rod and the axis of the fourth rotating rod as the radius, along the axis of the fourth rotating rod as the center, and towards the rotating direction of the screening disc;

[0022] At the top of the second guide groove, a fourth guide groove communicating the second guide groove with the first guide groove is formed with the straight-line distance between the second guide groove and the axis of the fourth rotating rod as the radius and with the axis of the fourth rotating rod as the center of the circle, in the direction of the rotation of the screening disc. A transition groove is formed at the junction of the side wall of the first guide groove away from the fourth rotating shaft and the fourth guide groove. The transition groove is inclined downward in the direction of the fourth rotating shaft from top to bottom.

[0023] When one end of the movable rod is located in the first guide groove, the other end is located in the spiral guide groove. When one end of the movable rod is located in the second guide groove, the other end is located in the movable plug.

[0024] A blocking rod is arranged on the movable plug along the direction perpendicular to the axis of the fourth rotating rod. The blocking rod rotates around the axis of the fourth rotating rod on the peripheral wall of the movable plug. A fifth guide groove is formed on the top wall of the second guide groove. The fifth guide groove penetrates through the fourth guide groove and extends above the fourth guide groove. And the width of the blocking rod in the vertical direction is greater than the width of the fourth guide groove in the vertical direction. When the movable rod is located in the first guide groove or the second guide groove or the third guide groove, the blocking rod is located in the second guide groove. When the movable rod is located in the fourth guide groove, the blocking rod is located in the fifth guide groove.

[0025] Furthermore, the control assembly further includes a diversion pipe, a fifth rotating rod and a plurality of partition fan blades. One end of the diversion pipe is communicated with the discharge port and the other end is vertically downward. The middle part of the diversion pipe is an arc-shaped flared section. The fifth rotating rod is horizontally arranged in the flared section and is coaxially rotatably connected with the flared section. The partition fan blades are located in the flared section. One end of the partition fan blade is fixed to the fifth rotating rod and the other end abuts against the inner wall of the flared section. The plurality of partition fan blades are circumferentially arrayed along the peripheral wall of the fifth rotating rod. Two partition fan blades and the inner wall of the flared section form a receiving groove. The diversion pipe is divided into two non-communicating upper and lower sections from the flared section through a plurality of receiving grooves.

[0026] The fifth rotating rod is driven to rotate by a second driving assembly.

[0027] Further, the second driving assembly includes a sixth rotating rod, a driving half gear, a seventh rotating rod, a first driven gear, and a second driven gear. The sixth rotating rod is arranged parallel to the fifth rotating rod and is rotatably connected to the first pipeline. The sixth rotating rod is connected to the fourth rotating rod through a bevel gear set. The driving half gear is coaxially installed on the sixth rotating rod. The seventh rotating rod is rotatably connected to the first pipeline. The first driven gear is coaxially fixed on the seventh rotating rod and meshes with the driving half gear. A second driven gear is coaxially installed on each of the fifth rotating rods, and a plurality of the second driven gears are connected by a chain. The seventh rotating rod is linked with one of the fifth rotating rods through a gear chain.

[0028] In summary, the present application includes at least one of the following beneficial technical effects:

[0029] 1. The designed fluidized bed aluminum hydroxide feeding system for the aluminum fluoride production line screens the materials entering the fluidized bed through the screening assembly, avoiding the dead bed of the fluidized bed caused by the excessive volume of the materials piling up in the fluidized bed.

[0030] 2. The designed fluidized bed aluminum hydroxide feeding system for the aluminum fluoride production line evenly feeds the materials into the fluidized bed by relying on the cooperation of the blanking assembly and the control assembly. Description of the Drawings

[0031] Figure 1 is the overall structural schematic diagram of the fluidized bed aluminum hydroxide feeding system for the aluminum fluoride production line in the embodiment of the present application;

[0032] Figure 2 is the exploded schematic diagram of the structure of the screening assembly in the fluidized bed aluminum hydroxide feeding system for the aluminum fluoride production line in the embodiment of the present application;

[0033] Figure 3 is Figure 2 the cross-sectional schematic diagram of;

[0034] Figure 4 is the partial structural schematic diagram of the screening assembly;

[0035] Figure 5 is the structural schematic diagram of the blanking assembly in the fluidized bed aluminum hydroxide feeding system for the aluminum fluoride production line in the embodiment of the present application;

[0036] Figure 6 is the cross-sectional schematic diagram of Fig. 5;

[0037] Figure 7 is Figure 2 the enlarged schematic diagram of part A;

[0038] Figure 8 is Figure 3 the enlarged schematic diagram of part B;

[0039] Figure 9 It is a schematic cross-sectional view of the blanking component structure;

[0040] Figure 10 It is a schematic cross-sectional view of the blanking component structure from another angle.

[0041] Reference numerals: 01, storage tank; 02, fluidized bed; 1, support; 2, screening component; 21, screening disc; 211, first screening groove; 212, screening holes; 213, second screening groove; 214, installation groove; 22, first driving member; 23, aggregate bucket; 24, cover; 241, material dropping port; 25, collection ring; 251, collection groove; 252, collection port; 26, heating pad; 3, blanking component; 31, first pipeline; 311, discharge port; 4, control component; 41, diversion pipe; 411, flared section; 42, fifth rotating rod; 43, partition fan blade; 5, crushing component; 51, rolling roller; 6, spreading component; 61, first rotating rod; 62, spreading rod; 7, first driving component; 71, internal gear ring; 72, self-rotating gear; 73, second rotating rod; 74, third rotating rod; 8, blanking component; 81, blanking pipe; 811, first guiding groove; 812, second guiding groove; 813, third guiding groove; 814, fourth guiding groove; 815, transition groove; 816, fifth guiding groove; 82, fourth rotating rod; 821, spiral guiding groove; 83, movable plug; 84, movable rod; 85, blocking rod; 9, second driving component; 91, sixth rotating rod; 92, driving half gear; 93, seventh rotating rod; 94, first driven gear; 95, second driven gear. Detailed implementation manners

[0042] The following further describes the present application in detail with reference to the Figure 1-10 accompanying drawings.

[0043] The embodiment of the present application discloses a fluidized bed aluminum hydroxide feeding system for an aluminum fluoride production line.

[0044] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6, the fluidized bed aluminum hydroxide feeding system of the aluminum fluoride production line includes a support 1, a screening assembly 2 for screening aluminum hydroxide, and a blanking assembly 3 for feeding the screened aluminum hydroxide into the fluidized bed. The screening assembly 2 includes a screening disc 21 and a first driving member 22. The screening disc 21 is horizontally arranged and rotatably connected to the support 1. A first screening groove 211 is formed on the upper surface of the screening disc 21 along a spiral line. The first screening groove 211 penetrates the side wall of the screening disc 21. A plurality of screening holes 212 penetrating the screening disc 21 are formed in the first screening groove 211 in the vertical direction. An aggregate bucket 23 for collecting the materials screened by the screening disc 21 is arranged below the screening disc 21. The aggregate bucket 23 is installed on the support 1; the first driving member 22 is installed on the support 1 and is used to drive the screening disc 21 to rotate along the divergent direction of the first screening groove 211;

[0045] The blanking assembly 3 includes a first pipeline 31. One end of the first pipeline 31 is communicated with the discharge end of the aggregate bucket 23, and the other end extends obliquely downward into the fluidized bed. A plurality of discharge ports 311 are formed on the bottom wall of a section of the first pipeline 31 located in the fluidized bed. The plurality of discharge ports 311 are arranged in an array along the long side direction of the first pipeline 31, and a control assembly 4 for controlling the opening and closing of the discharge port 311 is arranged at each discharge port 311;

[0046] The materials in the storage tank fall from the discharge port into the first screening groove 211. During the process of the first driving member 22 driving the screening disc 21 to rotate, the materials in the first screening groove 211 move outward from the screening disc 21 due to centrifugal force. During the movement of the materials, the materials smaller than the size of the screening holes 212 fall from the screening holes 212, are collected in the aggregate bucket 23, and then fall into the first pipeline 31. Since the first pipeline 31 is obliquely arranged, the materials falling into the first pipeline 31 slide obliquely downward along the first pipeline 31. By controlling the closing of the discharge port 311 through the control assembly 4, the materials are evenly scattered in the fluidized bed, and the materials with larger particles are thrown out from the periphery of the screening disc 21;

[0047] In this way, the size of the materials entering the fluidized bed is controlled, and at the same time, the materials are evenly scattered in the fluidized bed to avoid the occurrence of dead bed phenomenon.

[0048] Furthermore, in order to prevent the materials from being thrown out of the first screening groove 211, the screening assembly 2 further includes a fastening cover 24 covering the surface of the screening disc 21. The fastening cover 24 is detachably installed on the screening disc 21. In this application, a bolt fixing method is adopted. A material falling port 241 communicated with the first screening groove 211 is formed on the fastening cover 24;

[0049] In this way, the materials in the storage tank enter the first screening groove 211 through the material falling port 241 for screening. During the rotation of the screening disc 21, the fastening cover 24 also restricts the movement of the materials in the first screening groove 211.

[0050] Reference Figure 2 , Figure 3 and Figure 4 , further, in order to collect the materials with too large size in the first screening tank 211, the screening assembly 2 further includes a collection ring 25 sleeved on the circumferential side of the screening disc 21. The collection ring 25 is fixed on the bracket 1. The screening disc 21 is coaxially and rotationally connected with the collection ring 25. A ring-shaped collection groove 251 is formed on the inner wall of the collection ring 25. The first screening tank 211 is communicated with the collection groove 251;

[0051] After the screening disc 21 rotates and screens, the materials with larger particles in the first screening tank 211 are thrown out from the circumferential side of the screening disc 21 and enter the collection groove 251.

[0052] Reference Figure 3 , in order to facilitate the collection by personnel, the bottom wall of the collection groove 251 is integrally inclined, and a collection port 252 is formed at the lowest point.

[0053] Reference Figure 4 , further, in order to avoid the materials entering the fluidized bed from greatly changing the temperature in the fluidized bed, a heating pad 26 is embedded in the inner wall of the first screening tank 211.

[0054] Reference Figure 4 , in this application, the screening holes 212 are preferably formed in the section of the heating pad 26 away from the center of the screening disc 21, so that the materials can be preheated before screening.

[0055] Reference Figure 2 and Figure 7 , further, in order to enable the materials with larger particles to enter the fluidized bed, the fluidized bed aluminum hydroxide feeding system of the aluminum fluoride production line further includes a crushing assembly 5 arranged at the bottom of the first screening tank 211. The crushing assembly 5 includes two rolling rollers 51 and two second driving members. A second screening tank 213 with the same vertical projection as the first screening tank 211 is formed in the screening disc 21 below the first screening tank 211. The screening holes 212 penetrate through the second screening tank 213. An installation groove 214 communicated with the second screening tank 213 is formed at the bottom of the first screening tank 211. The rolling rollers 51 are horizontally and rotationally installed in the installation groove 214. The second driving members are installed on the screening disc 21 to drive the rolling rollers 51 to rotate. The two rolling rollers 51 are arranged in parallel. In this application, the second driving member is preferably a motor;

[0056] After screening for a period of time, the materials with larger particles fall between the two rolling rollers 51. After being crushed by rolling, they form smaller particles and fall into the second screening tank 213 for screening.

[0057] Reference Figure 4, in this application, a plurality of installation grooves 214 are provided. The plurality of installation grooves 214 are arrayed along the opening direction of the first screening groove 211, and a crushing component 5 is provided in each installation groove 214.

[0058] Refer to Figure 3 , further, the collection groove 251 is communicated with the second screening groove 213 to collect the particles that have not been successfully crushed.

[0059] Refer to Figure 3 and Figure 8 , in order to disperse the materials in the first screening groove 211, the fluidized bed aluminum hydroxide feeding system of the aluminum fluoride production line further includes a dispersing component 6. The dispersing component 6 includes a first rotating rod 61 and a plurality of dispersing rods 62. The first rotating rod 61 is vertically arranged in the first screening groove 211, and the first rotating rod 61 is coaxially rotatably connected to the cover 24. A plurality of dispersing rods 62 are provided on the peripheral wall of the first rotating rod 61;

[0060] A plurality of dispersing components 6 are provided along the meridian direction of the screening disc 21. The plurality of dispersing components 6 on the same meridian of the screening disc 21 form a column, and there are multiple columns on the screening disc 21;

[0061] The first rotating rod 61 is driven to rotate by a first driving component 7;

[0062] The first driving component 7 drives the first rotating rod 61 to rotate. The first rotating rod 61 drives the dispersing rods 62 to disperse the materials in the first screening groove 211, preventing the agglomerated materials from not passing through the screening holes 212.

[0063] Refer to Figure 3 and Figure 8 , the first driving component 7 includes an internal gear ring 71, a plurality of self-rotating gears 72, a plurality of second rotating rods 73 and a plurality of third rotating rods 74. The internal gear ring 71 is coaxially embedded in the inner wall of the collection ring 25. The second rotating rods 73 are coaxially and vertically rotatably connected to the cover 24. The self-rotating gears 72 are coaxially fixed on the second rotating rods 73 and mesh with the internal gear ring 71. The third rotating rods 74 are arranged along the meridian direction of the screening disc 21 and are coaxially rotatably connected to the cover 24. The second rotating rods 73 and the third rotating rods 74 are linked by a bevel gear set. The first rotating rod 61 is linked to the third rotating rod 74 through a bevel gear set;

[0064] One self-rotating gear 72, one second rotating rod 73 and one third rotating rod 74 jointly drive a column of dispersing components 6 to work;

[0065] During the rotation of the screening disc 21, since the self-rotating gear 72 meshes with the internal gear ring 71, the self-rotating gear 72 rotates itself, and then drives the second rotating rod 73 to rotate. The second rotating rod 73 drives the third rotating rod 74 to rotate through a bevel gear set, and the third rotating rod 74 drives a plurality of first rotating rods 61 to rotate through a plurality of bevel gear sets.

[0066] Refer to Figure 9 and Figure 10 In order to intermittently feed a batch of materials with nearly the same mass into the first pipeline 31, the fluidized bed aluminum hydroxide feeding system of the aluminum fluoride production line further includes a feeding component 8 that connects the aggregate bucket 23 and the first pipeline 31. The feeding component 8 includes a feeding pipe 81 and a fourth rotating rod 82. The feeding pipe 81 is fixed below the aggregate bucket 23 and is coaxial with the screening disc 21. The inner diameter of the feeding pipe 81 has two sections, and the inner diameter expands in the vertically downward direction. One end of the fourth rotating rod 82 is fixedly connected to the screening disc 21 coaxially, and the other end extends into the feeding pipe 81. A spiral guiding groove 821 is formed on the peripheral wall of the fourth rotating rod 82, and the spiral direction of the spiral guiding groove 821 from top to bottom is the same as the rotation direction of the screening disc 21;

[0067] A movable plug 83 is sleeved on the fourth rotating rod 82. The outer diameter of the movable plug 83 is the same as the minimum inner diameter of the feeding pipe 81. The connection between the movable plug 83 and the fourth rotating rod 82 is a friction connection. An activity rod 84 is provided on the movable plug 83 along a direction perpendicular to the axis of the fourth rotating rod 82. The activity rod 84 is elastically slidably connected to the movable plug 83 and can pass through the inner wall and the outer wall of the movable plug 83. In the normal state, the movable plug 83 has a tendency to move towards the fourth rotating side;

[0068] First guiding grooves 811 and second guiding grooves 812 are respectively formed on the inner wall of the feeding pipe 81 in the vertical direction, and both the first guiding grooves 811 and the second guiding grooves 812 pass through different inner diameter sections of the feeding pipe 81. The linear distance between the first guiding grooves 811 and the axis of the fourth rotating rod 82 is smaller than the linear distance between the second guiding grooves 812 and the axis of the fourth rotating rod 82;

[0069] At the bottom end of the first guiding grooves 811, a third guiding groove 813 that connects the first guiding grooves 811 and the second guiding grooves 812 is formed with the linear distance between the side of the first guiding grooves 811 away from the fourth rotating rod 82 and the axis of the fourth rotating rod 82 as the radius, with the axis of the fourth rotating rod 82 as the center, and towards the rotation direction of the screening disc 21;

[0070] At the top of the second guiding groove 812, a fourth guiding groove 814 communicating with the second guiding groove 812 and the first guiding groove 811 is formed with the straight-line distance between the second guiding groove 812 and the axis of the fourth rotating rod 82 as the radius and with the axis of the fourth rotating rod 82 as the center of the circle, and is opened in the direction of the rotation of the screening disc 21. At the intersection of the side wall of the first guiding groove 811 far from the fourth rotating shaft and the fourth guiding groove 814, a transition groove 815 is formed, and the transition groove 815 is inclined downward in the direction of the fourth rotating shaft from top to bottom;

[0071] When one end of the movable rod 84 is located in the first guiding groove 811, the other end is located in the spiral guiding groove 821. When one end of the movable rod 84 is located in the second guiding groove 812, the other end is located in the movable plug 83;

[0072] A blocking rod 85 is provided on the movable plug 83 along the direction perpendicular to the axis of the fourth rotating rod 82. The blocking rod 85 rotates on the peripheral wall of the movable plug 83 with the axis of the fourth rotating rod 82 as the center line. A fifth guiding groove 816 is formed on the top wall of the second guiding groove 812. The fifth guiding groove 816 penetrates through the fourth guiding groove 814 and extends above the fourth guiding groove 814. The width of the blocking rod 85 in the vertical direction is greater than the width of the fourth guiding groove 814 in the vertical direction. When the movable rod 84 is located in the first guiding groove 811 or the second guiding groove 812 or the third guiding groove 813, the blocking rod 85 is located in the second guiding groove 812. When the movable rod 84 is located in the fourth guiding groove 814, the blocking rod 85 is located in the fifth guiding groove 816;

[0073] When the movable rod 84 is located in the fourth guiding groove 814, at this time, the plugging rod 85 is located in the fifth guiding groove 816. Since the fourth rotating rod 82 is frictionally connected to the movable plug 83, the fourth rotating rod 82 drives the movable plug 83 to rotate, so that one end of the movable rod 84 away from the fourth rotating rod 82 is located in the transition groove. Subsequently, when the weight of the material on the movable plug 83 reaches a certain degree, the movable plug 83 slides down. The movable rod 84 is pressed by the inclined side wall of the transition groove 815, so that one end of the movable rod 84 close to the fourth rotating rod 82 extends into the guiding groove, and one end of the movable rod 84 away from the fourth rotating rod 82 is in the second guiding groove 812 to play a guiding role, so that the movable plug 83 slides down along the fourth rotating rod 82. The plugging rod 85 is always in the second guiding groove 812 to plug the second guiding groove 812 during the sliding process of the movable plug 83. When the movable plug 83 slides to a section with a larger inner diameter of the blanking pipe 81, the material falls from the periphery of the movable plug 83 and enters the first pipeline 31. When the movable rod 84 enters the third guiding groove 813, one end of the movable rod 84 away from the fourth driving point rotates with the movable plug 83 in the third guiding groove 813. After rotating into the second guiding groove 812, the movable rod 84 exits from the spiral guiding groove 821, and the movable plug 83 rises by its own restoring force until the movable rod 84 enters the fourth guiding groove 814, and intermittent feeding is carried out in this cycle to control the quality of the material entering the fluidized bed.

[0074] Referring to Figure 9 , in the present application, in order to facilitate the falling of the material from the movable plug 83, the top of the movable plug 83 is conical.

[0075] Referring to Figure 9 , in the present application, in order to increase the frictional force between the movable plug 83 and the fourth rotating rod 82, a friction plate is embedded on the inner wall of the movable plug 83 in contact with the fourth rotating rod 82.

[0076] Referring to Figure 9 , in order to facilitate the rotation of the screening disc 21, in the present application, the first driving member 22 adopts a double-shaft motor, and one output shaft of the driving member is coaxially fixed to the screening disc 21, and the other output shaft is coaxially fixed to the fourth rotating rod 82.

[0077] Referring to Figure 5 and Figure 7, in order to further limit the quantitative feeding of materials into the fluidized bed and at the same time restrict the reverse flow of the air flow in the fluidized bed from the first pipe 31, the control assembly 4 further includes a diversion pipe 41, a fifth rotating rod 42 and a plurality of partition fan blades 43. One end of the diversion pipe 41 is communicated with the discharge port 311 and the other end is vertically downward. The middle part of the diversion pipe 41 is an arc-shaped flared section 411. The fifth rotating rod 42 is horizontally arranged in the flared section 411 and is coaxially rotatably connected to the flared section 411. The partition fan blades 43 are located in the flared section 411. One end of the partition fan blade 43 is fixed to the fifth rotating rod 42 and the other end abuts against the inner wall of the flared section 411. The plurality of partition fan blades 43 are circumferentially arranged along the circumferential wall of the fifth rotating rod 42. Two partition fan blades 43 and the inner wall of the flared section 411 form a receiving groove. The diversion pipe 41 is divided into two non-communicating upper and lower sections from the flared section 411 through a plurality of receiving grooves;

[0078] The fifth rotating rod 42 is driven to rotate by the second driving assembly 9;

[0079] The material enters the receiving groove from the first pipe 31. During the rotation of the fifth rotating rod 42, the receiving groove is driven to rotate. When the receiving groove rotates to the lower part of the flared section 411, the material drops from the receiving groove into the fluidized bed;

[0080] Relying on a plurality of receiving grooves to separate the upper and lower ends of the flared section 411, preventing the air flow in the fluidized bed from entering the first pipe 31. By controlling the rotation time and angle of the fifth rotating rod 42 through the second driving assembly 9, the material is preheated again in the guide pipe, and at the same time, the material is fed more accurately.

[0081] Refer to Figure 5 , in order to make each receiving groove contain enough materials, the second driving assembly 9 includes a sixth rotating rod 91, a driving half gear 92, a seventh rotating rod 93, a first driven gear 94 and a second driven gear 95. The sixth rotating rod 91 is arranged parallel to the fifth rotating rod 42 and is rotatably connected to the first pipe 31. The sixth rotating rod 91 is connected to the fourth rotating rod 82 through a bevel gear set. The driving half gear 92 is coaxially installed on the sixth rotating rod 91. The seventh rotating rod 93 is rotatably connected to the first pipe 31. The first driven gear 94 is coaxially fixed to the seventh rotating rod 93 and meshes with the driving half gear 92. A second driven gear 95 is coaxially installed on each fifth rotating rod 42. The plurality of second driven gears 95 are connected by a chain. The seventh rotating rod 93 is linked with a fifth rotating rod 42 through a gear chain;

[0082] During the rotation of the fourth rotating rod 82, the sixth rotating rod 9191 is driven to rotate through the bevel gear set. The sixth rotating rod 9191 drives the driving half gear 92 to intermittently drive the first driven gear 94 to rotate. The first driven gear 94 drives the seventh rotating rod 93 to rotate. The seventh rotating rod 93 is linked with the second driven gear 95 on the fifth rotating rod 42 through a gear chain, thereby driving the fifth rotating rod 42 to rotate. The fifth rotating rod 42 drives the partition fan blade 43 to rotate, thereby driving a plurality of receiving grooves to rotate. Through the intermittent meshing of the driving half gear 92 and the first driven gear 94, the fifth rotating rod 42 is driven to rotate intermittently, so as to wait for sufficient materials to be filled in each receiving groove.

[0083] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. Fluidized bed aluminum hydroxide feeding system of aluminum fluoride production line, characterized in that: include: Bracket (1); A screening component (2) for screening aluminum hydroxide, the screening component (2) comprising a screening disc (21) and a first driving member (22), the screening disc (21) being arranged horizontally and being rotatably connected to the support (1), a first screening groove (211) being provided on the upper surface of the screening disc (21) along a spiral line, the first screening groove (211) penetrating the side wall of the screening disc (21), a plurality of screening holes (212) penetrating the screening disc (21) being provided in the first screening groove (211) along a vertical direction, a collecting barrel (23) for collecting materials screened by the screening disc (21) being provided below the screening disc (21), the collecting barrel (23) being mounted on the support (1); the first driving member (22) being mounted on the support (1) and being used to drive the screening disc (21) to rotate along the divergent direction of the first screening groove (211); and a material discharge assembly (3) for delivering the material collected by the material collection barrel (23) into the fluidized bed, the material discharge assembly (3) comprising a first pipe (31), one end of the first pipe (31) being connected to the discharge end of the material collection barrel (23), and the other end of the first pipe (31) extending obliquely downward into the fluidized bed, a section of the first pipe (31) located in the fluidized bed having a plurality of discharge openings (311) on the bottom wall, the plurality of discharge openings (311) being arranged in an array along the long side direction of the first pipe (31), and each discharge opening (311) being provided with a control assembly (4) for controlling the opening and closing of the discharge opening (311); The screening assembly (2) further comprises a collecting ring (25) sleeved on the circumference of the screening disc (21), the collecting ring (25) being fixed on the bracket (1), the screening disc (21) being coaxially rotatably connected with the collecting ring (25), an annular collecting groove (251) being formed on the inner wall of the collecting ring (25), and the first screening groove (211) being in communication with the collecting groove (251); The invention also comprises a crushing assembly (5) arranged at the bottom of the first screening groove (211) for crushing larger particles of material, the crushing assembly (5) comprising two crushing rollers (51) and two second driving members, a second screening groove (213) which is consistent with the vertical projection of the first screening groove (211) is provided inside the screening disc (21) below the first screening groove (211), the screening hole (212) passes through the second screening groove (213), a mounting groove (214) which is connected to the second screening groove (213) is provided at the bottom of the first screening groove (211), the crushing roller (51) is horizontally rotatably installed in the mounting groove (214), the second driving member is installed on the screening disc (21) to drive the crushing roller (51) to rotate, and the two crushing rollers (51) are arranged in parallel.

2. The aluminum fluoride production line fluidized bed aluminum hydroxide feeding system according to claim 1, characterized in that: The screening assembly (2) further comprises a buckle cover (24) which is arranged on the surface of the screening disc (21); the buckle cover (24) is detachably mounted on the screening disc (21); and a material drop opening (241) which is in communication with the first screening groove (211) is provided on the buckle cover (24).

3. The aluminum fluoride production line fluidized bed aluminum hydroxide feeding system according to claim 1, characterized in that: A heating pad (26) is embedded in the inner wall of the first screening tank (211).

4. The aluminum fluoride production line fluidized bed aluminum hydroxide feeding system according to claim 2, characterized in that: The invention also comprises a scattering assembly (6) for scattering the materials in the first screening slot (211), wherein the scattering assembly (6) comprises a first rotating rod (61) and a shifting rod (62), wherein the first rotating rod (61) is vertically arranged in the first screening slot (211), and the first rotating rod (61) is coaxially rotatably connected to the buckle cover (24), and a plurality of shifting rods (62) are arranged on the peripheral wall of the first rotating rod (61); The scattering components (6) are provided in plurality along the meridian direction of the screening disc (21), and the plurality of scattering components (6) on the same meridian of the screening disc (21) form a row, and the screening disc (21) is provided with a plurality of rows; The first rotating rod (61) is driven to rotate by the first driving assembly (7).

5. The aluminum fluoride production line fluidized bed aluminum hydroxide feeding system according to claim 4, characterized in that: The first driving assembly (7) comprises an inner gear ring (71), a plurality of self-rotating gears (72), a plurality of second rotating rods (73) and a plurality of third rotating rods (74); the inner gear ring (71) is coaxially embedded in the inner wall of the collecting ring (25); the second rotating rod (73) is coaxially vertically rotatably connected to the buckle cover (24); the self-rotating gear (72) is coaxially fixed to the second rotating rod (73) and meshes with the inner gear ring (71); the third rotating rod (74) is arranged along the meridian direction of the screening disc (21) and is coaxially rotatably connected to the buckle cover (24); the second rotating rod (73) and the third rotating rod (74) are linked via a bevel gear set; the first rotating rod (61) is linked via a bevel gear set with the third rotating rod (74); A self-rotating gear (72), a second rotating rod (73) and a third rotating rod (74) jointly drive a row of the spreading components (6) to work.

6. The aluminum fluoride production line fluidized bed aluminum hydroxide feeding system according to any one of claims 1 to 5, characterized in that: It also includes a material discharge assembly (8) for connecting the material collection barrel (23) with the first pipeline (31), the material discharge assembly (8) including a material discharge pipe (81) and a fourth rotating rod (82), the material discharge pipe (81) is fixed below the material collection barrel (23) and is coaxial with the screening disc (21), the inner diameter of the material discharge pipe (81) is divided into two sections, and the inner diameter expands in the vertical downward direction, one end of the fourth rotating rod (82) is coaxially fixed with the screening disc (21), and the other end extends into the material discharge pipe (81), and a spiral guide groove (821) is provided on the peripheral wall of the fourth rotating rod (82), and the spiral direction of the spiral guide groove (821) from top to bottom is consistent with the rotation direction of the screening disc (21); The fourth rotating rod (82) is provided with a movable plug (83), the outer diameter of the movable plug (83) is consistent with the minimum inner diameter of the discharge tube (81), the movable plug (83) and the fourth rotating rod (82) are frictionally connected, and the movable plug (83) is provided with a movable rod (84) in a direction perpendicular to the axis of the fourth rotating rod (82), the movable rod (84) is elastically slidably connected to the movable plug (83), and can pass through the inner wall and the outer wall of the movable plug (83), and the movable plug (83) has a tendency to move toward the side of the fourth rotating rod (82) in a normal state; A first guide groove (811) and a second guide groove (812) are respectively provided on the inner wall of the discharge tube (81) in the vertical direction, and the first guide groove (811) and the second guide groove (812) both pass through different inner diameter sections of the discharge tube (81), and a straight-line distance between the first guide groove (811) and the axis of the fourth rotating rod (82) is smaller than a straight-line distance between the second guide groove (812) and the axis of the fourth rotating rod (82); At the bottom end of the first guide groove (811), with the straight-line distance between the side of the first guide groove (811) away from the fourth rotating rod (82) and the axis of the fourth rotating rod (82) as the radius, and along the axis of the fourth rotating rod (82) as the center, a third guide groove (813) connecting the first guide groove (811) and the second guide groove (812) is provided in the direction of rotation of the screening disc (21); At the top end of the second guide groove (812), with the straight-line distance between the second guide groove (812) and the axis of the fourth rotating rod (82) as the radius and the axis of the fourth rotating rod (82) as the center, a fourth guide groove (814) connecting the second guide groove (812) and the first guide groove (811) is provided toward the rotation direction of the screening disc (21); a transition groove (815) is provided at the intersection of the side wall of the first guide groove (811) away from the fourth rotating rod (82) and the fourth guide groove (814); the transition groove (815) is arranged obliquely from top to bottom in the direction toward the fourth rotating rod (82); When one end of the movable rod (84) is located in the first guide groove (811), the other end is located in the spiral guide groove (821); when one end of the movable rod (84) is located in the second guide groove (812), the other end is located in the movable plug (83); A blocking rod (85) is provided on the movable stopper (83) in a direction perpendicular to the axis of the fourth rotating rod (82). The blocking rod (85) rotates on the peripheral wall of the movable stopper (83) with the axis of the fourth rotating rod (82) as the center line. A fifth guide groove (816) is provided on the top wall of the second guide groove (812). The fifth guide groove (816) passes through the fourth guide groove (814) and extends to the top of the fourth guide groove (814). The width of the blocking rod (85) in the vertical direction is greater than the width of the fourth guide groove (814) in the vertical direction. When the movable rod (84) is located in the first guide groove (811) or the second guide groove (812) or the third guide groove (813), the blocking rod (85) is located in the second guide groove (812). When the movable rod (84) is located in the fourth guide groove (814), the blocking rod (85) is located in the fifth guide groove (816).

7. The aluminum fluoride production line fluidized bed aluminum hydroxide feeding system according to claim 6, characterized in that: The control assembly (4) further comprises a guide tube (41), a fifth rotating rod (42) and a plurality of partition blades (43); one end of the guide tube (41) is connected to the discharge port (311) and the other end is vertically downward; the middle portion of the guide tube (41) is an arc-shaped expansion section (411); the fifth rotating rod (42) is horizontally penetrated through the expansion section (411) and is coaxially rotatably connected with the expansion section (411); the partition blades (43) are located at the expansion section (411). In the mouth section (411), one end of the partition blade (43) is fixed to the fifth rotating rod (42), and the other end is in contact with the inner wall of the flared section (411); a plurality of the partition blades (43) are arranged in a circular array along the circumference of the circumferential wall of the fifth rotating rod (42); two of the partition blades (43) and the inner wall of the flared section (411) form a receiving groove; and the guide tube (41) is separated from the flared section (411) into two sections which are not connected to each other from top to bottom through the plurality of receiving grooves; The fifth rotating rod (42) is driven to rotate by the second driving assembly (9).

8. The aluminum fluoride production line fluidized bed aluminum hydroxide feeding system according to claim 7, characterized in that: The second driving assembly (9) comprises a sixth rotating rod (91), a driving half gear (92), a seventh rotating rod (93), a first driven gear (94) and a second driven gear (95); the sixth rotating rod (91) is arranged parallel to the fifth rotating rod (42) and is rotatably connected to the first pipe (31); the sixth rotating rod is connected to the fourth rotating rod (82) through a bevel gear set; the driving half gear (92) is coaxially mounted on the sixth rotating rod (91); the seventh rotating rod (93) is rotatably connected to the first pipe (31); the first driven gear (94) is coaxially fixed on the seventh rotating rod (93) and meshes with the driving half gear (92); one second driven gear (95) is coaxially mounted on each of the fifth rotating rods (42); a plurality of the second driven gears (95) are connected through a chain; the seventh rotating rod (93) is linked to one of the fifth rotating rods (42) through a gear chain.

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