A phosphate preparation drying device

Abstract

The present invention discloses a drying device for preparing phosphate, which includes a chassis and fixed frames arranged on both sides of the top of the chassis. An outer double-cone barrel is arranged between the two fixed frames. Pipe shafts are fixedly installed at the outer ends of the fixed seats. The outer end of the inner extraction pipe is connected with a rotating connector. A vacuum pump is installed at the lower part of the fixed frame, and a driving assembly is arranged at the upper part of the fixed frame. An inner double-cone barrel is arranged 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 positioning assembly is arranged inside the slag collection box; through the cooperation of the outer double-cone barrel, the inner double-cone barrel and the feeding mechanism, the present invention facilitates the uniform drying operation of the phosphate to be dried, enables the phosphate to impact with the feeding blade under its own gravity, and facilitates the impact and dispersion of the phosphate during the early caking process while discharging the moisture inside the inner double-cone barrel; it is convenient to further improve the uniformity and drying efficiency of the phosphate during drying.

Description

Technical Field

[0001] The present invention relates to the technical field of phosphate production drying appliances, and particularly to a phosphate preparation drying device. Background Art

[0002] Phosphate drying equipment is a special equipment for drying phosphate, aiming to remove moisture in phosphate and improve its quality and stability; specifically, traditional phosphate drying equipment often fails to achieve uniform drying of materials during the drying process; this is mainly due to limitations in equipment design, which prevent phosphate from being fully dispersed during the drying process, resulting in over-drying in some areas and under-drying in some areas; this uneven drying state not only affects the quality of phosphate but also reduces the drying efficiency.

[0003] In addition, phosphate is prone to caking during the drying process, which is also a major problem faced by existing equipment; the caking phenomenon causes phosphate particles to adhere tightly to each other, forming larger lumps, which are difficult to be evenly heated during the drying process, further exacerbating the problem of uneven drying; at the same time, caking also affects the subsequent processing and application of phosphate, reducing its use value; and water vapor is generated during the drying process, and excessive water vapor is likely to condense into water droplets when it encounters a colder inner wall, which is likely to cause secondary pollution to the dried phosphate. Therefore, it is necessary to reduce some of the internal water vapor during its drying process, but the existing pneumatic dryer cannot reduce some water vapor, resulting in the inability to discharge water vapor during the drying of phosphate, which is likely to cause the situation of secondary caking of phosphate and unable to perform uniform drying operation during the drying process of phosphate; therefore, the above problems need to be solved. Summary of the Invention

[0004] The purpose of the present invention is to propose a phosphate preparation drying device to solve the drawbacks existing in the prior art.

[0005] To achieve the above object, the present invention adopts the following technical solution: A phosphate preparation drying device, including a chassis and fixed frames provided on both sides of the top of the chassis. Between the two fixed frames, there is an outer double-cone barrel for drying phosphate. Both sides of the outer double-cone barrel are fixedly connected with fixed seats. Inner bearing seats are provided on the inner sides of the tops of the fixed frames. The outer ends of the fixed seats are all fixedly installed with pipe shafts. Horizontally fixed inside one of the pipe shafts is an inner extraction pipe. The outer end of the inner extraction pipe is connected with a rotary connector. The outer end of the rotary connector is connected with an extraction air pipe. A vacuum pump is installed at the lower part of one of the fixed frames, and the bottom end of the extraction air pipe is fixedly communicated with the air extraction end of the vacuum pump; At the upper part of one of the fixed frames, there is a driving component for the rotation of the outer double-cone barrel. An inner double-cone barrel is arranged inside the outer double-cone barrel, and a heating space is arranged between the outer double-cone barrel and the inner double-cone barrel; At the feeding port at the top of the inner double-cone barrel, a closing cover is installed, and at the discharging port at the bottom of the inner double-cone barrel, a discharging valve pipe is installed; In the middle of the top surface of the chassis, a placement groove is opened. Inside the placement groove, a slag collection box is placed. Inside the slag collection box, a positioning component for limiting the discharging valve pipe is provided.

[0006] Preferably, the inner end of the inner extraction pipe is hermetically penetrated into the inner double-cone barrel, and the pipe body tilts upwards; At the inner end of the inner extraction pipe, a mixing mechanism for drying phosphate is installed; The outer end of the other pipe shaft is connected with an air exchange pipe through a rotary joint, and an inner blowing pipe is horizontally rotatably arranged inside the other pipe shaft; The inner end of the inner blowing pipe penetrates into the heating space between the outer double-cone barrel and the inner double-cone barrel; Inside the heating space, a plurality of sound-absorbing support plates are vertically and equidistantly arranged.

[0007] Preferably, the outer end of the inner blowing pipe passes out of the air exchange pipe and is connected with a heat supply pipe; At the upper part of the other fixed frame, there is a heat supply machine for supplying heat to the heat supply pipe. The bottom end of the air exchange pipe is vertically fixedly connected with an exhaust pipe. An exhaust machine is arranged at the bottom of the other fixed frame. The bottom end of the exhaust pipe is fixedly communicated with the air return port of the exhaust machine.

[0008] Preferably, the driving component includes a servo motor arranged at 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 pipe shafts. A transmission belt is sleeved between the driven pulley and the driving pulley.

[0009] Preferably, the positioning component includes a cross plate horizontally fixedly connected to the middle of the top end of the slag collection box, a stable ring seat fixed to the middle of the top surface of the cross plate, and a braking seat movably sleeved on the outside of the stable ring seat. Vertically installed in the inner ring of the stable ring seat is an electric push rod in a contracted state, and the top of the telescopic end of the electric push rod is fixedly connected to the inner top surface of the braking seat; And a layer of sealing gasket is provided on the top of the braking seat.

[0010] Preferably, the mixing mechanism includes a support frame rotatably arranged at the top of the inner end of the inner extraction pipe, a fixed pipe sleeved outside the support frame, and multiple feeding blade plates equidistantly arranged on the outer circumference of the fixed pipe. There is a material passing interval between the fixed pipe and the inner extraction pipe. Through the arrangement of the feeding blade plates, when the inner double-cone barrel is turned over for mixing, the phosphate impacts with the feeding blade plates under the action of its own gravity, so that the phosphate during the drying process is dispersed. And the feeding blade plates will also rotate following the fixed pipe under the impact of the phosphate to break up the caked phosphate multiple times.

[0011] Preferably, among the multiple feeding blade plates on the circumference of the fixed pipe, three feeding blade plates have counterweight bars fixedly connected to their outer ends. Through the arrangement of the counterweight bars, the feeding blade plates can be self-deflected under the action of the gravity of the counterweight bars when the outer double-cone barrel rotates.

[0012] Preferably, a plurality of air extraction ports are equidistantly opened on the outer wall of the upper part of the inner end of the inner extraction pipe, and filter bags are arranged inside the air extraction ports. The bag bodies of the filter bags are located outside the inner extraction pipe and the bag mouths are arranged inward.

[0013] Preferably, a plurality of bag-beating plates for cleaning the phosphate on the filter bags are uniformly arranged vertically on the inner circumferential wall of the fixed pipe.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: Through the cooperation of the outer double-cone barrel, the inner double-cone barrel and the feeding mechanism, the present invention facilitates the uniform and rapid drying operation of the phosphate to be dried, and enables the phosphate to impact with the feeding blade plates under the action of its own gravity, so that the phosphate during the drying process is dispersed, which is convenient for realizing that during the process of discharging the moisture inside the inner double-cone barrel, it also plays a role in impacting and breaking up the phosphate during the early caking process; effectively avoiding the situation that the phosphate rolls to form caking during the turning process of the inner double-cone barrel and is difficult to be uniformly heated and dried. Through the intermittent forward and backward turning operation of the inner double-cone barrel, it is convenient to make the phosphate uniformly adhere to the wall inside the inner double-cone barrel, so that the phosphate can be evenly distributed on the inner wall of the inner double-cone barrel, which is convenient for further improving the uniformity and drying efficiency of the phosphate during drying. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention, and constitute a part of this application. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0016] Figure 1 is a first perspective schematic diagram of the overall structure of the present invention;

[0017] Figure 2 is a second perspective schematic diagram of the overall structure of the present invention;

[0018] Figure 3Schematic diagram of the first perspective of the removal of the upper barrel body of the outer double-cone barrel of the present invention;

[0019] Figure 4 Schematic diagram of the second perspective of the removal of the upper barrel body of the outer double-cone barrel of the present invention;

[0020] Figure 5 Schematic diagram of the first perspective of the removal of the upper structures of the outer double-cone barrel and the inner double-cone barrel of the present invention;

[0021] Figure 6 Schematic diagram of the second perspective of the removal of the upper structures of the outer double-cone barrel and the inner double-cone barrel of the present invention;

[0022] Figure 7 Cross-sectional view of the structures of the outer double-cone barrel and the inner double-cone barrel of the present invention;

[0023] Figure 8 Schematic diagram of the top view structure of the inner double-cone barrel of the present invention;

[0024] Figure 9 Schematic diagram of the structure of the inner extraction pipe and the mixing mechanism of the present invention;

[0025] Figure 10 Schematic diagram of the structure of the inner extraction pipe, the driving component and the mixing mechanism of the present invention;

[0026] Figure 11 Schematic diagram of the first perspective of the structure of the driving component and the mixing mechanism of the present invention;

[0027] Figure 12 Schematic diagram of the lower structures of the outer double-cone barrel and the inner double-cone barrel of the present invention;

[0028] Figure 13 Schematic diagram of the first perspective of the structure of the inner extraction pipe and the filter bag of the present invention;

[0029] Figure 14 Schematic diagram of the second perspective of the structure of the inner extraction pipe and the filter bag of the present invention;

[0030] Figure 15 Schematic diagram of the structure of the fixed pipe and the material stirring vane plate of the present invention;

[0031] Figure 16 Schematic diagram of the structure of the bagging plate inside the fixed pipe of the present invention.

[0032] Sequence numbers in the figure: 1, chassis; 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 collection box; 18, cross plate; 19, inner double-cone barrel; 20, sound-absorbing support plate; 21, stable ring seat; 22, braking seat; 23, electric push rod; 24, inner extraction pipe; 25, fixed pipe; 26, material pushing blade; 27, counterweight bar; 28, support frame; 29, filter bag; 30, bag hitting plate; 31, inner blowing pipe. Detailed implementation mode

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0034] Embodiment 1: Refer to Figures 1 to 16 , a drying device for phosphate preparation, including a chassis 1 and fixed frames 2 arranged on both sides of the top of the chassis 1. An outer double-cone barrel 3 for phosphate drying is arranged between the two fixed frames 2. Fixed seats 4 are fixedly connected to both sides of the outer double-cone barrel 3. Bearing seats 5 are arranged inside the tops of the fixed frames 2. Pipe shafts 6 are fixedly installed at the outer ends of the fixed seats 4. The ends of the pipe shafts 6 are limited inside the bearing seats 5. An inner extraction pipe 24 is horizontally fixedly arranged inside one of the pipe shafts 6. The outer end of the inner extraction pipe 24 is connected to a rotating connector 7. 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 communicated with the air extraction end of the vacuum pump 9; a driving assembly for the rotation of the outer double-cone barrel 3 is arranged at the upper part of one of the fixed frames 2. An inner double-cone barrel 19 is arranged inside the outer double-cone barrel 3. A heating space is arranged between the outer double-cone barrel 3 and the inner double-cone barrel 19; a sealing cover is installed at the feeding port at 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 chassis 1, and a slag collection box 17 is placed inside the placement groove. A positioning assembly for limiting the discharge valve pipe is arranged inside the slag collection box 17; through the cooperation of the outer double-cone barrel 3, the inner double-cone barrel 19 and the material pushing mechanism, it is convenient to perform a uniform and rapid drying operation on the phosphate to be dried, and it can enable the phosphate to impact with the material pushing blade 26 under its own gravity, so that the phosphate during the drying process is dispersed, which is convenient to realize that when the moisture inside the inner double-cone barrel 19 is discharged, it also plays a role in impacting and dispersing the phosphate during the early caking process.

[0035] In the present invention, the inner end of the inner extraction tube 24 is hermetically penetrated into the inner double-cone barrel 19, and the tube body tilts upward; a mixing mechanism for phosphate drying is installed at the inner end of the inner extraction tube 24; the outer end of the other tube shaft 6 is connected with an air exchange pipe through a rotary joint, and an inner blowing pipe 31 is horizontally rotatably arranged inside the other tube shaft 6; the inner end of the inner blowing 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 vertically and equidistantly arranged inside the heating space; the outer end of the inner blowing pipe 31 passes out of the air exchange pipe and is connected with a heat supply pipe 13, the inner end of the tube shaft 6 penetrates into the heating space, the inner end of the heat supply pipe 13 extends into the heating space, and there is a return interval space for heat return between the heat supply pipe 13 and the tube shaft 6; a heat supply machine 14 for supplying heat to the heat supply pipe 13 is arranged on the upper part of another fixing frame 2, the bottom end of the air exchange pipe is vertically fixedly connected with an exhaust pipe 15, an exhaust machine 16 is arranged at the bottom of the other fixing frame 2, and the bottom end of the exhaust pipe 15 is fixedly communicated with the air return port of the exhaust machine 16; through the intermittent forward and backward flipping operation of the inner double-cone barrel 19, it is convenient to realize the effect of uniform wall hanging of phosphate in the inner double-cone barrel 19, so that the phosphate can be evenly distributed on the inner wall of the inner double-cone barrel 19, which is convenient to further improve the uniformity and drying efficiency of phosphate during drying.

[0036] In the present invention, the driving assembly includes a servo motor 10 arranged on the upper part of one of the fixing 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 cross plate 18 horizontally fixedly connected to the middle of the top end of the slag collection box 17, a stable ring seat 21 fixed to the middle of the top surface of the cross plate 18, and a braking seat 22 movably sleeved on the outer side of the stable ring seat 21. A vertically installed electric push rod 23 in a contracted state is installed in the inner ring of the stable 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 braking seat 22; and a layer of sealing gasket is arranged on the top of the braking seat 22; by lifting the braking seat 22 by the electric push rod 23, it is convenient to perform a limiting operation on the vertically placed inner double-cone barrel 19.

[0037] Embodiment 2: It is basically the same as the technical solution of Embodiment 1, except that, as Figures 7 to 11 、 Figures 13 to 16As shown in the figure, the mixing mechanism includes a support frame 28 rotatably arranged at the top of the inner end of the inner extraction pipe 24, a fixed pipe 25 sleeved outside the support frame 28, and multiple feeding blade plates 26 equidistantly arranged on the circumferential side of the outer wall of the fixed pipe 25. There is a material passing interval between the fixed pipe 25 and the inner extraction pipe 24. Through the arrangement of the feeding blade plates 26, when the inner double-cone barrel 19 is turned over for mixing, the phosphate impacts with the feeding blade plates 26 under its own gravity, dispersing the phosphate during the drying process. And the feeding blade plates 26 will also rotate following the fixed pipe 25 under the impact of the phosphate to break up the caked phosphate in multiple times; among the multiple feeding blade plates 26 on the circumferential side of the fixed pipe 25, three feeding blade plates 26 have counterweight bars 27 fixedly connected to their outer ends. Through the arrangement of the counterweight bars 27, the feeding blade plates 26 can be self-deflected under the gravity of the counterweight bars 27 when the outer double-cone barrel 3 rotates; multiple air extraction ports are equidistantly opened on the outer wall of the upper part of the inner end of the inner extraction pipe 24, and filter bags 29 are arranged inside the air extraction ports. The bag bodies of the filter bags 29 are located outside the inner extraction pipe 24 and the bag mouths are arranged inward; multiple bag-beating plates 30 for cleaning the phosphate on the filter bags 29 are uniformly arranged vertically on the inner circumferential wall of the fixed pipe 25. Through the arrangement of the feeding mechanism, it effectively avoids the situation that the phosphate rolls to form lumps during the turning of the inner double-cone barrel 19 and is difficult to be uniformly heated and dried.

[0038] Working principle: In this embodiment, the present invention also proposes a use method of a phosphate preparation and drying device, including the following steps:

[0039] Step 1, first electrically connect the vacuum pump 9, the servo motor 10, the heating machine 14, the exhaust machine 16, and the electric push rod 23 to the external control device through wires respectively. Then open the closing cover at the top of the inner double-cone barrel 19, pour the phosphate to be dried into the inner double-cone barrel 19, and then seal the feeding port at the top of the inner double-cone barrel 19 through the closing cover;

[0040] Step 2, then start the heating machine 14 to supply heat into 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. And due to the setting of the upper and lower conical surfaces of the inner double-cone barrel 19, the hot air in the heating space can quickly fill each part, improving the heating efficiency of the inner double-cone barrel 19 and the uniformity of heat reception of each part of the barrel body; at the same time, start the exhaust machine 16 to discharge the excess hot air inside the heating space through the exhaust pipe 15 and the air exchange pipe, avoiding the situation of excessive pressure inside the heating space;

[0041] Step 3: Then start the servo motor 10 to drive the rotation of the driving pulley 12. The driving pulley 12 rotates through the transmission belt with the driven pulley 11. One of the pipe shafts 6 is driven to rotate by the driven pulley 11. The outer double-cone barrel 3 is driven to flip by the rotating pipe shaft 6. The flipping sequence is to flip forward six circles, and then flip backward five circles through the driving assembly; through the forward and backward intermittent flipping operation of the outer double-cone barrel 3, it is convenient to make the phosphate uniformly adhere to the inner wall of the inner double-cone barrel 19, 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 plays a role in uniformly drying the phosphate;

[0042] Step 4: Then start the vacuum pump 9 to perform dehumidification and vacuum pumping operations on the inside of the inner double-cone barrel 19 through the air extraction pipe 8 and the inner extraction pipe 24. It is convenient to quickly extract the moist air inside the inner double-cone barrel 19 and the steam generated by the phosphate during the drying process during the process of flipping and drying the phosphate inside the inner double-cone barrel 19, 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, it can improve the uniformity of the phosphate inside the inner double-cone barrel 19 when it falls due to gravity during flipping, which is convenient to effectively improve the high efficiency of uniformly drying the phosphate inside the inner double-cone barrel 19;

[0043] Step 5: During the process of flipping the phosphate inside the inner double-cone barrel 19, through the feeding mechanism at the inner end of the inner extraction pipe 24, when the inner double-cone barrel 19 is flipped and mixed, the phosphate impacts with the feeding vane plate 26 under the action of its own gravity, so that the phosphate during the drying process is dispersed. And the feeding vane plate 26 will also automatically rotate following the fixed pipe 25 under the action of the impact of the phosphate to break up the agglomerated phosphate in multiple times; among the multiple feeding vane plates 26 on the periphery of the fixed pipe 25, three feeding vane plates 26 at the outer ends are fixedly connected with counterweight bars 27. Through the setting of the counterweight bars 27, the feeding vane plate 26 can be automatically deflected under the action of the gravity of the counterweight bars 27 when the outer double-cone barrel 3 rotates, so as to play a role in impacting and dispersing the phosphate during the early agglomeration process while discharging the moisture inside the inner double-cone barrel 19; effectively avoid the situation that the phosphate rolls and forms agglomerates during the flipping process of the inner double-cone barrel 19, making it difficult to be evenly heated and dried, which is convenient to further improve the uniformity and drying efficiency of the phosphate during drying;

[0044] Step 6, after drying the phosphate inside the inner double-cone barrel 19, discharge the dried phosphate by opening the discharge valve pipe at the bottom of the inner double-cone barrel 19, then close the discharge pipe valve. Under the action of the driving assembly, make the inner double-cone barrel 19 in a vertical state, and then start the electric push rod 23 to lift the brake seat 22, so that the brake seat 22 abuts against the bottom of the discharge valve pipe, thereby playing a role in vertically limiting the stationary inner double-cone barrel 19, which is convenient for subsequent opening of the closed cover to perform the next feeding operation into the inner double-cone barrel 19.

[0045] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.

Claims

1. A phosphate preparation 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), fixed seats (4) are fixedly connected to both sides of the outer double-cone barrel (3), bearing seats (5) are provided on the inner sides of the tops of the fixed frames (2), and pipe shafts (6) are fixedly installed on the outer ends of the fixed seats (4), an inner suction pipe (24) is transversely fixedly provided inside one of the pipe shafts (6), 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 bottom 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 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; a mixing mechanism for phosphate drying is installed at the inner end of the inner suction pipe (24); the outer end of another pipe shaft (6) is connected to a ventilation pipe through a rotating joint, and an 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 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 outer side of the support frame (28), and a plurality of material-dispensing blades (26) equidistantly arranged on the outer wall circumference of the fixed tube (25). A material-penetrating interval is provided between the fixed tube (25) and the inner pumping tube (24). By providing 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 rotate with the fixed tube (25) under the action of the collision of the phosphate to scatter the agglomerated phosphate. Among the plurality of material-shifting blades (26) on the peripheral side of the fixed tube (25), three material-shifting blades (26) are fixedly connected to the outer ends of the material-shifting blades (26) with counterweight bars (27). 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-cone barrel (3) rotates.

2. A phosphate preparation and drying device according to claim 1, characterized in that: The outer end of the inner blowing pipe (31) passes through the ventilation pipe and is connected to the heating pipe (13); 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 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 the return air port of the exhaust machine (16).

3. A phosphate preparation and drying device according to claim 2, 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), and a transmission belt is sleeved between the driven pulley (11) and the driving pulley (12).

4. A phosphate preparation and drying device according to claim 1, characterized in that: The positioning assembly comprises a transverse plate (18) fixedly connected 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 transverse 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).

5. A phosphate preparation and drying device according to claim 2, characterized in that: 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.

6. A phosphate preparation and drying device according to claim 5, characterized in that: A plurality of bag-beating plates (30) for cleaning phosphate on the filter bag (29) are evenly and vertically arranged on the inner wall of the fixed tube (25).

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