Phosphate preparation drying device

Abstract

The invention discloses a phosphate preparation drying device which comprises a bottom frame and fixing frames arranged on the two sides of the top of the bottom frame, an outer double-cone barrel is arranged between the two fixing frames, pipe shafts are fixedly installed at the outer ends of fixing bases, the outer ends of inner suction pipes are connected with rotating connectors, vacuum pumps are installed on the lower portions of the fixing frames, and driving assemblies are arranged on the upper portions of the fixing frames. An inner double-cone barrel is arranged in the outer double-cone barrel, and a heating space is formed between the outer double-cone barrel and the inner double-cone barrel; a positioning assembly is arranged in the residue collecting box; through cooperation of the outer double-cone barrel, the inner double-cone barrel and the material stirring mechanism, phosphate to be dried can be conveniently and uniformly dried, the phosphate can collide with a material stirring blade plate under the action of the gravity of the phosphate, and in the process that moisture in the inner double-cone barrel is discharged, the inner double-cone barrel is prevented from colliding with the material stirring blade plate. The effect of impacting and scattering phosphate in the early-stage caking process is achieved; and the uniformity and the drying efficiency of the phosphate during drying can be further improved.

Description

Technical Field

[0001] The invention relates to the technical field of phosphate production drying tools, in particular to a phosphate preparation drying device. Background Art

[0002] Phosphate drying equipment is a special equipment used for drying phosphates, aiming to remove moisture from phosphates and improve their quality and stability. Specifically, traditional phosphate drying equipment often has difficulty in achieving uniform drying of materials during the drying process. This is mainly due to limitations in equipment design, which prevents phosphates from being fully dispersed during the drying process, resulting in over-drying in some areas and under-drying in others. This uneven drying state not only affects the quality of phosphates, but also reduces drying efficiency. In addition, phosphates are prone to form lumps during the drying process, which is also a major problem faced by existing equipment; the agglomeration phenomenon will cause the phosphate particles to adhere tightly to each other to form larger lumps, which are difficult to heat evenly during the drying process, further aggravating the problem of uneven drying; at the same time, agglomeration will also affect the subsequent treatment and application of phosphates, reducing their use value; and water vapor will be generated during the drying process. Excessive water vapor will easily condense into water droplets when encountering a colder inner wall, which can easily cause secondary pollution to the dried phosphates. Therefore, it is necessary to reduce the internal water vapor to a certain extent during the drying process, and the existing air flow dryer cannot reduce some water vapor, resulting in the inability to discharge water vapor during the drying process of the phosphate, which can easily cause secondary agglomeration of the phosphate and make it impossible to perform uniform drying operations on the phosphate during the drying process; therefore, the above problems need to be solved. Summary of the invention

[0003] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a phosphate preparation drying device.

[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a phosphate preparation and drying device, comprising a base frame and fixed frames arranged on both sides of the top of the base frame, an outer double-cone barrel for phosphate drying is arranged between the two fixed frames, both sides of the outer double-cone barrel are fixedly connected with fixed seats, the inner side of the top of the fixed frame is provided with a bearing seat, the outer ends of the fixed seats are fixedly installed with pipe shafts, one of the pipe shafts is transversely fixed with an inner pumping tube, the outer end of the inner pumping tube is connected with a rotating connector, the outer end of the rotating connector is connected with an exhaust pipe, and one of the fixed A vacuum pump is installed at the lower part of the frame, and the bottom end of the exhaust pipe is fixedly connected to the exhaust end of the vacuum pump; a driving component for rotating the outer double-cone barrel is provided on the upper part of one of the fixed frames, an inner double-cone barrel is provided inside the outer double-cone barrel, and a heating space is provided between the outer double-cone barrel and the inner double-cone barrel; a closing cover is installed at the feeding port on the top of the inner double-cone barrel, and a discharge valve pipe is installed at the discharge port at the bottom of the inner double-cone barrel; a placement groove is opened in the middle of the top surface of the base frame, a slag collecting box is placed inside the placement groove, and a positioning component for limiting the discharge valve pipe is provided inside the slag collecting box.

[0005] Preferably, the inner end of the inner suction pipe is sealed and penetrates into the inner double-cone barrel, and the tube body is tilted upward; the inner end of the inner suction pipe is installed with a mixing mechanism for phosphate drying; the outer end of the other tube shaft is connected to a ventilation pipe through a rotating joint, and an inner blow pipe is provided inside the other tube shaft for horizontal rotation; the inner end of the inner blow pipe penetrates into the heating space between the outer double-cone barrel and the inner double-cone barrel; a plurality of sound-absorbing support plates are vertically equidistantly provided inside the heating space.

[0006] Preferably, the outer end of the inner blow pipe passes through the ventilation pipe and is connected to a heating pipe; a heating machine for supplying heat to the heating pipe is provided on the upper part of the other fixed frame, an exhaust pipe is vertically fixed to the bottom end of the ventilation pipe, and an exhaust machine is provided at the bottom of the fixed frame on the other side, and the bottom end of the exhaust pipe is fixedly connected to the return air port of the exhaust machine.

[0007] Preferably, the driving assembly includes a servo motor arranged on the upper part of one of the fixed frames, a driving pulley arranged on the driving shaft of the servo motor and a driven pulley fixedly sleeved on the outer end of one of the tube shafts, and a transmission belt is sleeved between the driven pulley and the driving pulley.

[0008] Preferably, the positioning assembly includes a horizontal plate transversely fixed to the middle part of the top end of the slag collecting box, a stabilizing ring seat fixed to the middle part of the top surface of the horizontal plate, and a brake seat movably sleeved on the outside of the stabilizing ring seat, an electric push rod in a retracted state is vertically installed in the inner ring of the stabilizing ring seat, and the top of the telescopic end of the electric push rod is fixed to the inner top surface of the brake seat; and a layer of sealing pad is provided on the top of the brake seat.

[0009] Preferably, the mixing mechanism includes a support frame rotatably arranged on the top of the inner end of the inner suction tube, a fixed tube sleeved on the outside of the support frame and a plurality of material-diverting paddles equidistantly arranged on the circumference of the outer wall of the fixed tube. There is a material passing gap between the fixed tube and the inner suction tube. Through the arrangement of the material-diverting paddles, when the inner double-cone barrel is turned over and mixed, the phosphate collides with the material-diverting paddles under the action of its own gravity, so that the phosphate in the drying process is dispersed, and the material-diverting paddles will also automatically follow the rotation of the fixed tube under the action of the impact of the phosphate to perform multiple collisions to disperse the agglomerated phosphate.

[0010] Preferably, three of the multiple material-shifting blades on the circumferential side of the fixed tube have counterweight bars fixedly connected to their outer ends. Through the provision of the counterweight bars, the material-shifting blades can be autonomously deflected under the gravity of the counterweight bars when the outer double-conical barrel rotates.

[0011] Preferably, a plurality of suction ports are equidistantly provided on the outer wall of the upper inner end of the inner suction tube, and filter bags are provided inside the suction ports. The bag body of the filter bag is located outside the inner suction tube with the bag opening facing inward.

[0012] Preferably, a plurality of bag-breaking plates for cleaning phosphate on the filter bags are vertically provided on the inner wall of the fixed tube.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention facilitates uniform and rapid drying of the phosphate to be dried through the cooperation of the outer double-cone barrel with the inner double-cone barrel and the material-dispensing mechanism, and enables the phosphate to collide with the material-dispensing blade under the action of its own gravity, so that the phosphate is dispersed during the drying process, which facilitates the discharge of moisture from the inner double-cone barrel, and also plays a role in impacting and breaking up the phosphate in the early stage of agglomeration; effectively avoids the situation in which the phosphate rolls and forms agglomerates during the turning of the inner double-cone barrel, which makes it difficult to heat and dry evenly; through the intermittent flipping operation of the inner double-cone barrel back and forth, it is convenient to make the phosphate evenly hang on the wall in the inner double-cone barrel, so that the phosphate can be evenly dispersed on the inner wall of the inner double-cone barrel, which is convenient to further improve the uniformity and drying efficiency of the phosphate during drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings: Figure 1 It is a schematic diagram of the overall structure of the present invention from a first viewing angle; Figure 2 It is a schematic diagram of the overall structure of the present invention from a second viewing angle; Figure 3 This is a schematic structural diagram of the first perspective of the upper barrel body of the outer double-cone barrel of the present invention being removed; Figure 4 This is a schematic structural diagram of the second viewing angle of the upper barrel body of the outer double-cone barrel of the present invention being removed; Figure 5 This is a schematic diagram of the first perspective of dismantling the upper structures of the outer double-cone barrel and the inner double-cone barrel of the present invention; Figure 6 It is a schematic diagram of the second viewing angle of the outer double-cone barrel and the inner double-cone barrel upper structure removed according to the present invention; Figure 7 It is a cross-sectional view of the outer double-cone barrel and the inner double-cone barrel structure of the present invention; Figure 8 It is a schematic diagram of the top view of the inner double-cone barrel of the present invention; Fig. 9 It is a schematic diagram of the structure of the inner pumping tube and the material mixing mechanism of the present invention; Fig.10 It is a schematic diagram of the structure of the inner pumping tube, the driving assembly and the mixing mechanism of the present invention; Fig.11 It is a schematic structural diagram of the driving assembly and the mixing mechanism of the present invention from a first perspective; Fig.12 It is a schematic diagram of the lower structure of the outer double-cone barrel and the inner double-cone barrel of the present invention; Fig.13 It is a schematic structural diagram of the inner suction tube and the filter bag of the present invention from a first perspective; Fig.14 It is a structural schematic diagram of the inner suction tube and the filter bag of the present invention from a second viewing angle; Fig.15 It is a schematic diagram of the structure of the fixed pipe and the material-shifting blade of the present invention; Fig.16 It is a schematic diagram of the structure of the bagging plate inside the fixed tube of the present invention.

[0015] Serial numbers in the figure: 1. Base frame; 2. Fixed frame; 3. Outer double cone barrel; 4. Fixed seat; 5. Bearing seat; 6. Pipe shaft; 7. Rotating connector; 8. Exhaust pipe; 9. Vacuum pump; 10. Servo motor; 11. Driven pulley; 12. Driving pulley; 13. Heating pipe; 14. Heating machine; 15. Exhaust pipe; 16. Exhaust machine; 17. Slag collecting box; 18. Horizontal plate; 19. Inner double cone barrel; 20. Sound-absorbing support plate; 21. Stabilizing ring seat; 22. Brake seat; 23. Electric push rod; 24. Inner extraction pipe; 25. Fixed pipe; 26. Material-dispensing blade; 27. Counterweight bar; 28. Support frame; 29. ​​Filter bag; 30. Bag-breaking plate; 31. Inner blowing pipe. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0017] Example 1: See Figures 1 to 16 A phosphate preparation and drying device comprises a base frame 1 and a fixed frame 2 arranged on both sides of the top of the base frame 1, an outer double-cone barrel 3 for phosphate drying is arranged between the two fixed frames 2, both sides of the outer double-cone barrel 3 are fixedly connected with a fixed seat 4, the inner side of the top of the fixed frame 2 is provided with a bearing seat 5, the outer end of the fixed seat 4 is fixedly installed with a pipe shaft 6, the end of the pipe shaft 6 is limited inside the bearing seat 5, one of the pipe shafts 6 is transversely fixed with an inner suction pipe 24, the outer end of the inner suction pipe 24 is connected with a rotating connector 7, the outer end of the rotating connector 7 is connected with an exhaust pipe 8, a vacuum pump 9 is installed at the lower part of one of the fixed frames 2, and the bottom end of the exhaust pipe 8 is fixedly connected to the exhaust end of the vacuum pump 9; a driving component for rotating the outer double-cone barrel 3 is provided at the upper part of one of the fixed frames 2, and the outer double-cone barrel 3 is provided with a There is a heating space between the inner double-cone barrel 19, the outer double-cone barrel 3 and the inner double-cone barrel 19; a closing cover is installed at the feeding port on the top of the inner double-cone barrel 19, and a discharge valve pipe is installed at the discharge port at the bottom of the inner double-cone barrel 19; a placement groove is opened in the middle of the top surface of the bottom frame 1, and a slag collecting box 17 is placed inside the placement groove, and a positioning component for limiting the discharge valve pipe is provided inside the slag collecting box 17; through the cooperation of the outer double-cone barrel 3 with the inner double-cone barrel 19 and the material-discharging mechanism, it is convenient to carry out uniform and rapid drying operation on the phosphate to be dried, and the phosphate can collide with the material-discharging blade 26 under the action of its own gravity, so that the phosphate in the drying process is dispersed, which is convenient for realizing the discharge of moisture inside the inner double-cone barrel 19, and also plays a role in impacting and breaking up the phosphate in the early stage of agglomeration.

[0018] In the present invention, the inner end of the inner suction pipe 24 is sealed and penetrates into the inner double-cone barrel 19, and the tube body is tilted upward; the inner end of the inner suction pipe 24 is installed with a mixing mechanism for phosphate drying; the outer end of the other pipe shaft 6 is connected to the ventilation pipe through a rotating joint, and the inner blow pipe 31 is arranged inside the other pipe shaft 6 for horizontal rotation; the inner end of the inner blow pipe 31 penetrates into the heating space between the outer double-cone barrel 3 and the inner double-cone barrel 19; a plurality of sound-absorbing support plates 20 are arranged vertically and equidistantly inside the heating space; the outer end of the inner blow pipe 31 passes through the ventilation pipe and is connected to the heating pipe 13, the inner end of the pipe shaft 6 penetrates into the heating space, and the inner end of the heating pipe 13 extends into In the heating space, a reflux spacing space for heat reflux is provided between the heating pipe 13 and the pipe axis 6; a heating machine 14 for supplying heat to the heating pipe 13 is provided on the upper part of the other fixed frame 2, an exhaust pipe 15 is vertically fixed to the bottom end of the ventilation pipe, an exhaust fan 16 is provided at the bottom of the other side fixed frame 2, and the bottom end of the exhaust pipe 15 is fixedly connected to the return air port of the exhaust fan 16; through the intermittent flipping operation of the inner double-cone barrel 19 back and forth, it is convenient to make the phosphate in the inner double-cone barrel 19 evenly hang on the wall, so that the phosphate can be evenly distributed on the inner wall of the inner double-cone barrel 19, so as to further improve the uniformity and drying efficiency of the phosphate during drying.

[0019] In the present invention, the driving assembly includes a servo motor 10 arranged on the upper part of one of the fixed frames 2, a driving pulley 12 arranged on the driving shaft of the servo motor 10 and a driven pulley 11 fixedly sleeved on the outer end of one of the tube shafts 6, and a transmission belt is sleeved between the driven pulley 11 and the driving pulley 12; the positioning assembly includes a horizontal plate 18 laterally fixed to the middle part of the top end of the slag collecting box 17, a stabilizing ring seat 21 fixed to the middle part of the top surface of the horizontal plate 18 and a brake seat 22 movably sleeved on the outer side of the stabilizing ring seat 21, an electric push rod 23 in a retracted state is vertically installed in the inner ring of the stabilizing ring seat 21, and the top of the telescopic end of the electric push rod 23 is fixed to the inner top surface of the brake seat 22; and a layer of sealing pad is provided on the top of the brake seat 22; the brake seat 22 is lifted up by the electric push rod 23, so as to facilitate the limiting operation of the inner double-conical barrel 19 in the upright state.

[0020] Embodiment 2: The technical solution is basically the same as that of Embodiment 1, except that Figures 7 to 11 , Figures 13 to 16 As shown, the mixing mechanism includes a support frame 28 rotatably arranged on the top of the inner end of the inner pumping tube 24, a fixed tube 25 sleeved on the outside of the support frame 28, and a plurality of material-dispensing blades 26 equidistantly arranged on the outer wall of the fixed tube 25. There is a material-penetrating interval between the fixed tube 25 and the inner pumping tube 24. Through the arrangement of the material-dispensing blades 26, when the inner double-cone barrel 19 is turned over and mixed, the phosphate collides with the material-dispensing blades 26 under the action of its own gravity, so that the phosphate in the drying process is dispersed, and the material-dispensing blades 26 will also automatically rotate with the fixed tube 25 under the action of the impact of the phosphate to disperse the agglomerated phosphate; among the plurality of material-dispensing blades 26 on the circumference of the fixed tube 25, there are The outer ends of the three material-shifting blades 26 are fixedly connected with counterweight bars 27. Through the setting of the counterweight bars 27, the material-shifting blades 26 can be autonomously deflected under the action of the gravity of the counterweight bars 27 when the outer double-conical barrel 3 rotates; a plurality of air suction ports are equidistantly provided on the outer wall of the upper inner end of the inner suction tube 24, and filter bags 29 are provided inside the air suction ports. The bag body of the filter bag 29 is located outside the inner suction tube 24 and the bag opening is arranged inward; a plurality of bag-beating plates 30 for cleaning phosphate on the filter bag 29 are vertically provided on the inner circle wall of the fixed tube 25. Through the setting of the material-shifting mechanism, the situation in which phosphate rolls and forms lumps during the turning of the inner double-conical barrel 19 and is difficult to be evenly heated and dried can be effectively avoided.

[0021] Working principle: In this embodiment, the present invention also proposes a method for using a phosphate preparation drying device, comprising the following steps: Step 1: First, the vacuum pump 9, the servo motor 10, the heating machine 14, the exhaust machine 16 and the electric push rod 23 are electrically connected to the external control device through wires, and then the closing cover on the top of the inner double-cone barrel 19 is opened, and the phosphate to be dried is poured into the inner double-cone barrel 19, and then the feeding port on the top of the inner double-cone barrel 19 is closed by the closing cover; Step 2: Then start the heating machine 14 to supply heat to the heating space between the outer double-cone barrel 3 and the inner double-cone barrel 19 through the heating pipe 13, so that the heating space is filled with hot air, thereby uniformly heating the inner double-cone barrel 19. In addition, due to the arrangement of the upper and lower conical surfaces of the inner double-cone barrel 19, the hot air in the heating space can quickly fill all parts, thereby improving the efficiency of heating the inner double-cone barrel 19 and the uniformity of heating of all parts of the barrel body. At the same time, start the exhaust machine 16 to discharge the excess hot air in the heating space through the exhaust pipe 15 and the ventilation pipe to avoid excessive pressure in the heating space. Step three, then start the servo motor 10 to drive the active pulley 12 to rotate, the active pulley 12 rotates through the transmission belt and the driven pulley 11, and drives one of the tube shafts 6 to rotate through the driven pulley 11, and drives the outer double-cone barrel 3 to perform a flip operation through the rotating tube shaft 6, and the flipping sequence is to flip forward six times, and then flip backward five times through the driving component; through the front and back intermittent flipping operation of the outer double-cone barrel 3, it is convenient to make the phosphate in the inner double-cone barrel 19 evenly hang on the wall, so that the phosphate can be evenly distributed on the inner wall of the inner double-cone barrel 19, and then the inner double-cone barrel 19 can achieve the effect of evenly drying the phosphate; Step 4, then start the vacuum pump 9 to dehumidify and vacuum the inside of the inner double cone barrel 19 through the exhaust pipe 8 and the inner exhaust pipe 24, so that in the process of turning and drying the internal phosphate in the inner double cone barrel 19, the humid air inside the inner double cone barrel 19 and the steam generated by the phosphate during the drying process are quickly extracted, so that the inside of the inner double cone barrel 19 is in a dry vacuum state. When the inside of the inner double cone barrel 19 is in a vacuum state, the uniformity of the phosphate inside the inner double cone barrel 19 when it falls due to gravity during turning can be improved, so as to effectively improve the efficiency of uniform drying of the phosphate inside the inner double cone barrel 19; Step 5, when the inner double cone barrel 19 is turning over the phosphate inside, the material-dividing mechanism at the inner end of the inner pumping tube 24 is used to turn over and mix the phosphate in the inner double cone barrel 19, and the phosphate collides with the diverting blade 26 under the action of its own gravity, so that the phosphate in the drying process is dispersed, and the diverting blade 26 will also automatically follow the fixed tube 25 to rotate and break up the agglomerated phosphate under the action of the phosphate collision; among the multiple diverting blades 26 on the side of the fixed tube 25, three of the diverting blades 26 have outer ends that are fixed A counterweight bar 27 is connected. Through the setting of the counterweight bar 27, the material-dispensing blade 26 can be autonomously deflected under the gravity of the counterweight bar 27 when the outer double-cone barrel 3 rotates, thereby achieving the effect of discharging the moisture inside the inner double-cone barrel 19 and also hitting and breaking up the phosphate in the early stage of agglomeration; effectively avoiding the situation that the phosphate rolls and forms agglomerates during the turning of the inner double-cone barrel 19, which makes it difficult to heat and dry evenly, so as to further improve the uniformity and drying efficiency of the phosphate during drying; Step six, after completing the drying operation of the phosphate inside the inner double-cone barrel 19, the dried phosphate is discharged by opening the discharge valve tube at the bottom of the inner double-cone barrel 19, and then the discharge pipe valve is closed. Under the action of the driving component, the inner double-cone barrel 19 is placed in a vertical state, and then the electric push rod 23 is started to lift the brake seat 22, so that the brake seat 22 abuts against the bottom of the discharge valve tube, and then the vertical limiting function of the stopped rotating inner double-cone barrel 19 is started, so as to facilitate the subsequent opening of the closing cover to carry out the next feeding operation into the inner double-cone barrel 19.

[0022] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A phosphate preparation and drying device, comprising a base frame (1) and fixed frames (2) arranged on both sides of the top of the base frame (1), characterized in that: An outer double-cone barrel (3) for phosphate drying is provided between the two fixed frames (2), and a fixed seat (4) is fixedly connected to both sides of the outer double-cone barrel (3). A bearing seat (5) is provided on the inner side of the top of the fixed frame (2), and a pipe shaft (6) is fixedly installed on the outer end of the fixed seat (4). An inner suction pipe (24) is fixedly installed in a transverse direction inside one of the pipe shafts (6), and a mixing mechanism for phosphate drying is installed at the inner end of the inner suction pipe (24); the outer end of the inner suction pipe (24) is connected to a rotating connector (7), and the outer end of the rotating connector (7) is connected to an exhaust pipe (8); a vacuum pump (9) is installed at the lower part of one of the fixed frames (2), and the bottom end of the exhaust pipe (8) is fixedly connected to the exhaust end of the vacuum pump (9); A driving assembly for rotating the outer double-cone barrel (3) is provided on the upper part of one of the fixed frames (2); an inner double-cone barrel (19) is provided inside the outer double-cone barrel (3); a heating space is provided between the outer double-cone barrel (3) and the inner double-cone barrel (19); a closing cover is provided at the feeding port on the top of the inner double-cone barrel (19); a discharge valve pipe is provided at the discharge port on the bottom of the inner double-cone barrel (19); a placement groove is provided in the middle of the top surface of the bottom frame (1); a slag collecting box (17) is provided inside the placement groove; a positioning assembly for limiting the position of the discharge valve pipe is provided inside the slag collecting box (17); The material mixing mechanism comprises a support frame (28) rotatably arranged on the top of the inner end of the inner pumping tube (24), a fixed tube (25) sleeved on the outside of the support frame (28), and a plurality of material-dispensing blades (26) equidistantly arranged on the outer wall of the fixed tube (25).

2. A phosphate preparation and drying device according to claim 1, characterized in that: The inner end of the inner suction pipe (24) is sealed and penetrates into the inner double-cone barrel (19), and the pipe body is tilted upward; the outer end of the other pipe shaft (6) is connected to the ventilation pipe through a rotating joint, and the inner blow pipe (31) is arranged inside the other pipe shaft (6) for horizontal rotation; the inner end of the inner blow pipe (31) penetrates into the heating space between the outer double-cone barrel (3) and the inner double-cone barrel (19); a plurality of sound-absorbing support plates (20) are arranged vertically and equidistantly inside the heating space.

3. A phosphate preparation and drying device according to claim 2, characterized in that: The outer end of the inner blow pipe (31) passes through the ventilation pipe and is connected to a heat supply pipe (13); a heat supply machine (14) for supplying heat to the heat supply pipe (13) is provided at the upper part of the other fixed frame (2); an exhaust pipe (15) is vertically fixedly connected to the bottom end of the ventilation pipe; an exhaust machine (16) is provided at the bottom of the other fixed frame (2); and the bottom end of the exhaust pipe (15) is fixedly connected to an air return port of the exhaust machine (16).

4. A phosphate preparation and drying device according to claim 3, characterized in that: The driving assembly comprises a servo motor (10) arranged on the upper part of one of the fixed frames (2), a driving pulley (12) arranged on the driving shaft of the servo motor (10), and a driven pulley (11) fixedly sleeved on the outer end of one of the tube shafts (6), wherein a transmission belt is sleeved between the driven pulley (11) and the driving pulley (12).

5. A phosphate preparation and drying device according to claim 1, characterized in that: The positioning assembly comprises a horizontal plate (18) fixedly connected transversely to the middle part of the top end of the slag collecting box (17), a stabilizing ring seat (21) fixedly connected to the middle part of the top surface of the horizontal plate (18), and a brake seat (22) movably sleeved on the outside of the stabilizing ring seat (21), an electric push rod (23) in a retracted state is vertically installed in the inner ring of the stabilizing ring seat (21), and the top of the telescopic end of the electric push rod (23) is fixedly connected to the inner top surface of the brake seat (22); and a layer of sealing pad is provided on the top of the brake seat (22).

6. A phosphate preparation and drying device according to claim 2, characterized in that: A material passing gap is provided between the fixed tube (25) and the inner pumping tube (24). By means of the arrangement of the material shifting blade (26), when the inner double-cone barrel (19) is turned over and mixed, the phosphate collides with the material shifting blade (26) under the action of its own gravity, so that the phosphate is dispersed during the drying process. Furthermore, the material shifting blade (26) will also automatically rotate with the fixed tube (25) under the action of the collision of the phosphate to disperse the agglomerated phosphate.

7. A phosphate preparation and drying device according to claim 6, characterized in that: Among the plurality of material-shifting blades (26) on the circumferential side of the fixed tube (25), three of the material-shifting blades (26) are fixedly connected to counterweight bars (27) at their outer ends. By providing the counterweight bars (27), the material-shifting blades (26) can be autonomously deflected under the gravity of the counterweight bars (27) when the outer double-conical barrel (3) rotates.

8. A phosphate preparation and drying device according to claim 6, characterized in that: A plurality of air extraction ports are equidistantly provided on the outer wall of the upper inner end of the inner extraction tube (24), and filter bags (29) are provided inside the air extraction ports. The bag body of the filter bag (29) is located outside the inner extraction tube (24) and the bag opening is arranged inwardly.

9. A phosphate preparation and drying device according to claim 6, characterized in that: A plurality of bag-beating plates (30) for cleaning phosphate from the filter bags (29) are vertically arranged on the inner wall of the fixed tube (25).

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