Iron phosphate production system integrating crushing and drying processes

Abstract

The invention discloses an iron phosphate production system integrating crushing and drying processes, relates to the technical field of iron phosphate processing equipment, and provides the following scheme that the iron phosphate production system comprises an iron phosphate drying mechanism, and discharging dust suppression mechanisms are arranged at discharging ports of the iron phosphate drying mechanism; and an iron phosphate conveying mechanism is arranged at the feeding position of the front side of the iron phosphate drying mechanism. On the basis of a flash dryer in the iron phosphate drying process, a decomposition treatment mechanism for scattering an iron phosphate material cake is arranged at a feeding pipe opening of the flash dryer, and the material cake is forced to be in a loose state before entering an ascending pipeline of the flash dryer. The problem that the iron phosphate is in a compact pressed powder state after plate-frame pressure filtration and is difficult to permeate into the pressed powder after being dried by hot air is avoided; and moreover, the dust raising prevention assemblies are arranged at the discharge pipe orifice of the pulse dust collector and the discharge pipe orifices of the cyclone separators at all stages, so that the dust raising phenomenon caused by cyclone in the discharge pipe orifices during blanking is avoided by adsorbing the powder.

Description

Technical Field

[0001] The invention relates to the technical field of iron phosphate processing equipment, and in particular to an iron phosphate production system integrating crushing and drying processes. Background Art

[0002] Iron phosphate, lithium carbonate, and sugar, as the three main materials for making lithium iron phosphate materials, have always played a very important role. Iron phosphate, as a source of phosphorus and iron, is of paramount importance. In the preparation of iron phosphate, the iron phosphate after plate and frame filtration needs to be dried in a flash dryer. However, the raw material of iron phosphate is in a powder cake state after plate and frame filtration; when dried using a flash dryer, the powder cake is relatively compact, and it is difficult to penetrate into the powder cake by hot air drying inside the flash drying tower, resulting in a small amount of moisture in the dried raw material. In addition, when the discharge pipe of the pulse dust collector of the flash dryer and the discharge pipe of each level of cyclone separator release the raw material, because there is airflow inside the pipeline, dust is generated when the powder is released. Based on the above problems, technicians in this field have proposed an iron phosphate production system that integrates crushing and drying processes to solve them. Summary of the invention

[0003] In view of the above background technology, it is proposed that the iron phosphate raw material is in a powder cake state after plate and frame filtration; when dried using a flash dryer, the powder cake is relatively compact, and it is difficult to penetrate into the interior of the powder cake by hot air drying; the discharge pipe outlet of the pulse dust collector and the discharge pipe outlets of each level of cyclone separators are prone to dust, and thus a technical solution for an iron phosphate production system with an integrated crushing and drying process is provided.

[0004] It includes an iron phosphate drying mechanism, a discharge dust suppression mechanism is arranged on the discharge port of the iron phosphate drying mechanism, and an iron phosphate conveying mechanism is arranged at the front feeding position of the iron phosphate drying mechanism, and an iron phosphate cake material dispersing mechanism is fixedly connected to the top surface of the iron phosphate conveying mechanism;

[0005] The iron phosphate drying mechanism includes a drying main tower, a heater fixed on the left surface of the drying main tower, and a blower fixed on the left side of the heater, and a cyclone separator is connected to the right side of the drying main tower, a connecting pipeline is connected to the right side of the cyclone separator, a bag dust collector mounted on the ground is connected to the end of the connecting pipeline away from the cyclone separator, and an induced draft duct is connected to the right side of the bag dust collector, and an induced draft fan is connected to the end of the induced draft duct away from the bag dust collector;

[0006] The iron phosphate conveying mechanism includes a square frame, a motor fixed to the front area inside the square frame, and a screw conveyor fixed to the top surface of the square frame, wherein the front end of the screw conveyor is connected to a driven wheel, the front output shaft of the motor is connected to a driving wheel, and a transmission belt is arranged between the driving wheel and the driven wheel;

[0007] The iron phosphate cake material dispersing mechanism comprises a base, a driving motor fixed to the right side of the top surface of the base, and a crushing cabin fixed to the left side of the top surface of the base, a crushing roller is rotatably arranged in the inner cavity of the crushing cabin, and the right end of the crushing roller is connected to the output shaft of the driving motor through a coupling;

[0008] The discharge dust suppression mechanism includes a discharge port fixed on the bottom ports of the cyclone separator and the bag dust collector, a storage tank fixed on the bottom end port of the discharge port, and an exhaust pipe obliquely passing through and fixed on the surface of the storage tank, an air filter element is fixed in the inner cavity of the exhaust pipe, and a servo fan is installed on the end port of the exhaust pipe away from the storage tank.

[0009] In the above-mentioned technical solution of the iron phosphate production system integrating crushing and drying processes, preferably: a feed opening is provided on the top surface of the screw conveyor, a feed hopper is connected to the port of the feed opening, and the internal space of the feed hopper is interconnected with the internal space of the screw conveyor.

[0010] In the above-mentioned technical solution of the ferrous phosphate production system integrating crushing and drying processes, preferably: a screw conveying roller is rotatably arranged in the inner cavity of the screw conveyor, and the rear end port of the screw conveyor is connected to the feed port on the front side of the drying main tower, the front end of the screw conveying roller inside the screw conveyor passes through the front side of the screw conveyor, and the front end of the screw conveying roller is fixedly connected to the rear surface of the driven wheel through a coupling.

[0011] In the above-mentioned technical solution of the iron phosphate production system with integrated crushing and drying processes, preferably: a bracket is fixedly connected to the right side of the top surface of the base by screws, the four corners of the bottom surface of the driving motor are fixed above the bracket by bolts, and two vertical poles are fixedly connected to the bottom surface of the base, and a cross beam is welded to the left end of the vertical pole, and the end of the cross beam away from the vertical pole is fixedly connected to the right end face of the square frame.

[0012] In the technical solution of the above-mentioned iron phosphate production system integrating crushing and drying processes, preferably: a triangular support block is welded at the connection position of the vertical pole and the horizontal beam, and a connecting plate is welded between the side surfaces of the horizontal beams that are close to each other.

[0013] In the above-mentioned technical solution of the iron phosphate production system integrating crushing and drying processes, preferably: the right end of the crushing roller penetrates into the right side of the crushing cabin, and the end of the crushing roller located on the right side of the crushing cabin is connected to the output shaft of the drive motor through a coupling.

[0014] In the above technical solution of the ferric phosphate production system integrating crushing and drying processes, preferably: a discharge pipe is connected through the left surface of the crushing chamber, and an end of the discharge pipe away from the crushing chamber is located above the feed hopper.

[0015] In the above technical solution of the ferric phosphate production system integrating crushing and drying processes, preferably: a hopper is fixedly connected to the top port of the crushing chamber.

[0016] In the above technical solution of the ferric phosphate production system integrating crushing and drying processes, preferably: the top end surface of the storage tank is provided with a through hole communicating with the discharge port, and the bottom end of the storage tank is connected with a valve.

[0017] In the above-mentioned technical solution of the iron phosphate production system integrating crushing and drying processes, preferably: the axis of the exhaust pipe has an angle of 30-50° with the axis of the storage tank, and the port of the exhaust pipe passing through the storage tank is lower than the port located outside the storage tank.

[0018] It can be seen from the above technical solution that the present invention provides an iron phosphate production system integrating crushing and drying processes. Compared with the prior art, the present invention has the following beneficial effects:

[0019] The present invention is based on the flash dryer in the process of drying ferric phosphate, and a decomposition and processing mechanism for breaking up the ferric phosphate cake is set at the feeding pipe mouth of the flash dryer, forcing the cake to be in a loose state before entering the ascending pipe of the flash dryer. This avoids the problem that the ferric phosphate is in a relatively compact powder cake state after the plate and frame filter press, and the hot air drying is difficult to penetrate into the powder cake; moreover, dust prevention components are set at the discharge pipe mouth of the pulse dust collector and the discharge pipe mouth of each level of cyclone separators, which adsorbs the powder to avoid the dust phenomenon caused by the cyclone inside the discharge pipe mouth when feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces and describes the drawings required for use in the embodiments of the present invention or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A schematic diagram of a processing mechanism for preparing iron phosphate;

[0022] Figure 2 It is a schematic diagram of the iron phosphate drying mechanism;

[0023] Figure 3 is a schematic diagram of the iron phosphate transport mechanism;

[0024] Figure 4 It is a schematic diagram of the dispersing mechanism of ferrophosphate cake material;

[0025] Figure 5 This is a schematic diagram of the discharge dust suppression mechanism.

[0026] Attached Figure 1 -Attached Figure 5 The corresponding relationship of the parts is as follows:

[0027] 1. Iron phosphate drying mechanism; 11. Drying main tower; 12. Heater; 13. Blower; 14. Cyclone separator; 15. Induced draft fan; 16. Induced draft duct; 17. Bag dust collector; 18. Connecting pipeline; 2. Iron phosphate conveying mechanism; 21. Square frame; 22. Screw conveyor; 23. Feed hopper; 24. Driven wheel; 25. Transmission belt; 26. Driving wheel; 27. Motor; 3. Iron phosphate cake material dispersion mechanism; 31. Crossbeam; 32. Crushing cabin; 33. Vertical pole; 34. Base; 35. Driving motor; 36. Crushing roller; 37. Hopper; 38. Discharge pipe; 4. Discharge dust suppression mechanism; 41. Storage tank; 42. Discharge port; 43. Servo fan; 44. Air filter element; 45. Exhaust pipe. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] In order to more clearly explain and illustrate the technical solution and implementation of the present invention, several preferred specific embodiments for implementing the technical solution of the present invention are introduced below.

[0030] Embodiment: A preferred technical solution for an iron phosphate production system integrating crushing and drying processes:

[0031] Refer to the instruction manual Figure 1 As shown: it includes an iron phosphate drying mechanism 1, a discharge dust suppression mechanism 4 is provided on the discharge port of the iron phosphate drying mechanism 1, and an iron phosphate conveying mechanism 2 is provided at the front feeding position of the iron phosphate drying mechanism 1, and an iron phosphate cake material dispersing mechanism 3 is fixedly connected to the top surface of the iron phosphate conveying mechanism 2;

[0032] Refer to the instruction manual Figure 2As shown: the iron phosphate drying mechanism 1 includes a drying main tower 11, a heater 12 fixed on the left surface of the drying main tower 11, and a blower 13 fixed on the left side of the heater 12, and a cyclone separator 14 is connected to the right side of the drying main tower 11, a connecting pipe 18 is connected to the right side of the cyclone separator 14, a bag dust collector 17 erected on the ground is connected to the end of the connecting pipe 18 away from the cyclone separator 14, and an induced draft duct 16 is connected to the right side of the bag dust collector 17, and an induced draft fan 15 is connected to the end of the induced draft duct 16 away from the bag dust collector 17;

[0033] Refer to the instruction manual Figure 3 As shown: the iron phosphate conveying mechanism 2 includes a square frame 21, a motor 27 fixed to the front area inside the square frame 21, and a screw conveyor 22 fixed to the top surface of the square frame 21, wherein the front end of the screw conveyor 22 is connected to a driven wheel 24, the front output shaft of the motor 27 is connected to a driving wheel 26, and a transmission belt 25 is provided between the driving wheel 26 and the driven wheel 24;

[0034] Refer to the instruction manual Figure 4 As shown: the iron phosphate cake material dispersing mechanism 3 includes a base 34, a driving motor 35 fixed to the right side of the top surface of the base 34, and a crushing cabin 32 fixed to the left side of the top surface of the base 34, a crushing roller 36 is rotatably arranged in the inner cavity of the crushing cabin 32, and the right end of the crushing roller 36 is connected to the output shaft of the driving motor 35 through a coupling;

[0035] Refer to the instruction manual Figure 5 As shown: the discharge dust suppression mechanism 4 includes a discharge port 42 fixed on the bottom ports of the cyclone separator 14 and the bag dust collector 17, a storage tank 41 that passes through the bottom port of the discharge port 42, and an exhaust pipe 45 that obliquely passes through and is fixed on the surface of the storage tank 41, an air filter element 44 is fixed in the inner cavity of the exhaust pipe 45, and a servo fan 43 is installed on the end port of the exhaust pipe 45 away from the storage tank 41.

[0036] Refer to the instruction manual Figure 3As shown: a feed opening is provided on the top surface of the screw conveyor 22, a feed hopper 23 is connected to the port of the feed opening, and the internal space of the feed hopper 23 is interconnected with the internal space of the screw conveyor 22. A screw conveying roller is rotatably arranged in the inner cavity of the screw conveyor 22, and the rear end port of the screw conveyor 22 is connected to the feed port on the front side of the drying main tower 11, the front end of the screw conveying roller inside the screw conveyor 22 penetrates to the front side of the screw conveyor 22, and the front end of the screw conveying roller is fixedly connected to the rear side surface of the driven wheel 24 through a coupling. A bracket is fixedly connected to the right side of the top surface of the base 34 by screws, and the four corners of the bottom surface of the driving motor 35 are fixedly fixed to the top of the bracket by bolts, and two vertical poles 33 are fixedly connected to the bottom surface of the base 34, and a crossbeam 31 is welded to the left end of each vertical pole 33, and the end of the crossbeam 31 away from the vertical pole 33 is fixedly connected to the right end face of the square frame 21.

[0037] Refer to the instruction manual Figure 4 As shown: a triangular support block is welded at the connection position of the vertical pole 33 and the cross beam 31, and a connecting plate is welded between the surfaces of the cross beam 31 that are close to each other. The right end of the crushing roller 36 penetrates the right side of the crushing cabin 32, and the end of the crushing roller 36 located on the right side of the crushing cabin 32 is connected to the output shaft of the drive motor 35 through a coupling. The left surface of the crushing cabin 32 is connected to a discharge pipe 38, and the end of the discharge pipe 38 away from the crushing cabin 32 is located above the feed hopper 23. A hopper 37 is fixedly connected to the top port of the crushing cabin 32.

[0038] Refer to the instruction manual Figure 5 As shown: the top end surface of the storage tank 41 is provided with a through hole that is connected to the discharge port 42, and a valve is connected to the bottom end of the storage tank 41. The axis of the air extraction pipeline 45 and the axis of the storage tank 41 have an angle of 30-50 degrees, and the port of the air extraction pipeline 45 that penetrates into the storage tank 41 is lower than the port located outside the storage tank 41.

[0039] According to the above-mentioned preferred technical solution, the workflow of the technical solution is described as follows:

[0040] The iron phosphate raw material in cake form after plate and frame filtration is put into the hopper 37, and the cake material will enter the crushing chamber 32 along the hopper 37. The driving motor 35 rotates the crushing roller 36 inside the crushing chamber 32 by means of the output shaft. After the crushing roller 36 contacts the cake material inside the crushing chamber 32, the cake material is crushed into powder particles. The powder particles are discharged from the crushing chamber 32 along the discharge pipe 38 and fall into the feed hopper 23; at this time, the particles enter the screw conveyor 22 along the feed hopper 23, and the driving force of the motor 27 is transmitted to the screw conveyor roller inside the screw conveyor 22 by means of the driving wheel 26, the transmission belt 25 and the driven wheel 24, forcing the particulate material inside the screw conveyor 22 to be transported to the main drying tower 11.

[0041] The airflow blown into the heater 12 by the blower 13 will flow upward inside the drying main tower 11 after being heated by the heater 12. At this time, the particles entering the drying main tower 11 are entrained and flow upward by the hot air at the bottom of the drying main tower 11, and the moisture carried by the particles is dried during the flow. After the graded separation by the cyclone separator 14 and the dust removal by the bag filter 17, the dried materials can be released through the discharge port at the bottom of the cyclone separator 14 and the bag filter 17. Before the release process, the servo fan 43 is used to extract the air inside the exhaust pipe 45 and the storage tank 41, forcing the materials that enter the storage tank 41 and are in a flying state to be concentrated inside the exhaust pipe 45. After the servo fan 43 stops extracting under the obstruction of the air filter 44, the original flying state of the materials is unloaded and slides down along the exhaust pipe 45 to the inside of the storage tank 41.

[0042] The present invention is not limited to the above-mentioned optimal implementation mode. Anyone should be aware that any structural changes made under the inspiration of the present invention, and any technical solutions that are the same or similar to the present invention, fall within the protection scope of the present invention. Finally, it should be noted that the structures, proportions, sizes, etc. illustrated in the drawings of this specification are only used to match the contents disclosed in the specification for people familiar with this technology to understand and read, and are not used to limit the restrictive conditions that can be implemented in this application, so they have no technical substantive significance. Any structural modification, change in proportional relationship or adjustment of size, without affecting the effects that can be produced by this application and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.

Claims

1. A ferric phosphate production system integrating crushing and drying processes, comprising a ferric phosphate drying mechanism (1), characterized in that: The discharge port of the ferric phosphate drying mechanism (1) is provided with a discharge dust suppression mechanism (4), and the front feeding position of the ferric phosphate drying mechanism (1) is provided with a ferric phosphate conveying mechanism (2), and the top surface of the ferric phosphate conveying mechanism (2) is fixedly connected with a ferric phosphate cake material dispersion mechanism (3); The iron phosphate drying mechanism (1) comprises a drying main tower (11), a heater (12) fixed on the left surface of the drying main tower (11), and a blower (13) fixed on the left side of the heater (12), and the right side of the drying main tower (11) is connected to a cyclone separator (14), the right side of the cyclone separator (14) is connected to a connecting pipeline (18), the end of the connecting pipeline (18) away from the cyclone separator (14) is connected to a bag dust collector (17) erected on the ground, and the right side of the bag dust collector (17) is connected to an induced draft duct (16), and the end of the induced draft duct (16) away from the bag dust collector (17) is connected to an induced draft fan (15); The iron phosphate conveying mechanism (2) comprises a square frame (21), a motor (27) fixed to the front area inside the square frame (21), and a screw conveyor (22) fixed to the top surface of the square frame (21), wherein the front end of the screw conveyor (22) is connected to a driven wheel (24), the front output shaft of the motor (27) is connected to a driving wheel (26), and a transmission belt (25) is provided between the driving wheel (26) and the driven wheel (24); The iron phosphate cake material dispersing mechanism (3) comprises a base (34), a driving motor (35) fixed to the right side of the top surface of the base (34), and a crushing chamber (32) fixed to the left side of the top surface of the base (34), a crushing roller (36) is rotatably arranged in the inner cavity of the crushing chamber (32), and the right end of the crushing roller (36) is connected to the output shaft of the driving motor (35) through a coupling; The discharge dust suppression mechanism (4) comprises a discharge port (42) fixed on the bottom ports of the cyclone separator (14) and the bag dust collector (17), a storage tank (41) passing through the bottom end port of the discharge port (42), and an exhaust pipe (45) obliquely passing through and fixed on the surface of the storage tank (41), an air filter element (44) being fixed in the inner cavity of the exhaust pipe (45), and a servo fan (43) being installed on one end of the exhaust pipe (45) away from the storage tank (41).

2. The iron phosphate production system integrating crushing and drying process according to claim 1, characterized in that: A feed opening is provided on the top surface of the screw conveyor (22), a feed hopper (23) is connected to the end of the feed opening, and the internal space of the feed hopper (23) is interconnected with the internal space of the screw conveyor (22).

3. The iron phosphate production system integrating crushing and drying process according to claim 1, characterized in that: A screw conveying roller is rotatably arranged in the inner cavity of the screw conveyor (22), and the rear end port of the screw conveyor (22) is connected to the feed port on the front side of the drying main tower (11). The front end of the screw conveying roller inside the screw conveyor (22) penetrates to the front side of the screw conveyor (22), and the front end of the screw conveying roller is fixedly connected to the rear side surface of the driven wheel (24) through a coupling.

4. The iron phosphate production system integrating crushing and drying process according to claim 1, characterized in that: The right side of the top surface of the base (34) is fixedly connected to a bracket by screws, and the four corners of the bottom surface of the driving motor (35) are fixedly connected to the top of the bracket by bolts, and the bottom surface of the base (34) is fixedly connected to two vertical poles (33), and the left ends of the vertical poles (33) are welded with cross beams (31), and one end of the cross beam (31) away from the vertical poles (33) is fixedly connected to the right end face of the square frame (21).

5. The iron phosphate production system integrating crushing and drying process according to claim 4, characterized in that: A triangular support block is welded at the connection position between the vertical pole (33) and the cross beam (31), and a connecting plate is welded between the surfaces of one side of the cross beam (31) that are close to each other.

6. The iron phosphate production system integrating crushing and drying process according to claim 1, characterized in that: The right end of the crushing roller (36) penetrates the right side of the crushing chamber (32), and one end of the crushing roller (36) located on the right side of the crushing chamber (32) is connected to the output shaft of the driving motor (35) through a coupling.

7. The ferric phosphate production system integrating crushing and drying processes according to claim 1, characterized in that: A discharge pipe (38) is connected through the left surface of the crushing chamber (32), and an end of the discharge pipe (38) away from the crushing chamber (32) is located above the feed hopper (23).

8. The iron phosphate production system integrating crushing and drying process according to claim 1, characterized in that: A hopper (37) is fixedly connected to the top port of the crushing chamber (32).

9. The ferric phosphate production system integrating crushing and drying processes according to claim 1, characterized in that: A through hole communicating with the discharge port (42) is provided on the top end surface of the storage tank (41), and a valve is connected to the bottom end of the storage tank (41).

10. The ferric phosphate production system integrating crushing and drying processes according to claim 1, characterized in that: The axis of the air extraction pipe (45) and the axis of the material storage tank (41) form an angle of 30-50°, and the port of the air extraction pipe (45) penetrating into the material storage tank (41) is lower than the port located outside the material storage tank (41).

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