A roller fluidized bed granulator for producing calcium ammonium nitrate and a processing technology thereof

Abstract

This invention relates to the field of fluidized bed granulation technology, and discloses a drum-type fluidized bed granulator for producing calcium ammonium nitrate and its processing technology. The fluidized bed granulator includes a drum-type fluidized bed body and an atomizing nozzle body disposed inside it, and further includes: an inclined rotating assembly. The inclined rotating assembly drives the atomizing nozzle body to reciprocate around its connecting axis with the drum-type fluidized bed body. By setting the inclined rotating assembly, the invention drives the atomizing nozzle body to reciprocate around its connecting axis with the drum-type fluidized bed body, and the axis of the atomizing nozzle body is arranged at an acute angle with the central axis of the drum-type fluidized bed body. This structure allows the atomizing nozzle body to continuously change the spray angle during the spraying process, so that the calcium ammonium nitrate liquid uniformly covers the surface of the particle layer in the fluidized bed in a dynamic fan-shaped manner.

Description

Technical Field

[0001] This invention relates to the field of fluidized bed granulation technology, specifically to a drum-type fluidized bed granulator for producing calcium ammonium nitrate and its processing technology. Background Technology

[0002] Calcium ammonium nitrate is a compound fertilizer that is highly soluble in water. It has strong hygroscopicity, caking properties, and is flammable and explosive. It is a new type of high-efficiency compound fertilizer containing nitrogen and fast-acting calcium. It has a fast fertilizer effect and can quickly supplement nitrogen. The added calcium makes it more comprehensive in nutrients than ammonium nitrate. It can be directly absorbed by plants. Fluidized bed is a reactor that uses gas or liquid to suspend solid particles to achieve gas-solid or liquid-solid reactions. It includes types such as dispersed fluidized bed, cohesive fluidized bed, bubbling bed, turbulent bed, and fast bed. Its critical fluidization velocity is the minimum linear velocity required for the fluid to carry the particles. Cohesive fluidized bed has a two-phase structure of bubble phase and emulsion phase.

[0003] In patent application CN116422227B, the following is described: The granulation process includes an air inlet chamber, a fluidization chamber, and a settling chamber arranged sequentially from bottom to top. The fluidization chamber contains fluidized particles forming a fluidized bed. The fluidization chamber and the settling chamber are connected by an enlarged section. The upper part of the fluidized bed is a spraying zone. The lower boundary of the spraying zone is 200-300 mm below the theoretical interface of the fluidized bed, and the upper boundary is 300-500 mm above the theoretical interface of the fluidized bed. An atomizing spray gun is inserted into the spraying zone from the outside in. The angle between the atomizing spray gun and the horizontal direction does not exceed 15°, and the spray pattern is essentially horizontal. The internal circulation motion of the granulation zone, combined with the atomizing spray gun located in the spraying zone and its essentially horizontal spray pattern, results in more uniform particle size and improves the first-pass yield.

[0004] In the prior art, including the aforementioned patents, the atomizing nozzles of existing fluidized bed granulators are mostly installed at a fixed angle or can only perform simple linear reciprocating movement. Calcium ammonium nitrate solution has a certain degree of hygroscopicity and adhesion. Conventional fixed spraying methods easily lead to uneven distribution of the solution within the fluidized bed, resulting in locally overly wet particles or large particle size differences, affecting granulation quality. Furthermore, because the calcium ammonium nitrate solution is prone to gradually drying and scaling at the nozzle outlet during atomization, causing outlet blockage, existing granulators lack automatic cleaning and anti-clogging functions. Once blockage occurs, it is usually necessary to stop the machine and manually disassemble and clean the nozzle, which not only affects production continuity and increases maintenance costs but may also damage the nozzle due to frequent disassembly and assembly. Summary of the Invention

[0005] The problem this invention aims to solve is that existing fluidized bed granulators have difficulty automatically cleaning clogged nozzles.

[0006] To solve the above-mentioned technical problems, the technical solution of the present invention is: a drum fluidized bed granulator for producing calcium ammonium nitrate and its processing technology, comprising a drum fluidized bed body and an atomizing nozzle assembly disposed therein, wherein a granulation conveyor body is disposed on one side of the drum fluidized bed body, and an air pump is installed on the granulation conveyor body.

[0007] The atomizing nozzle assembly includes an atomizing nozzle body rotatably connected inside the drum fluidized bed body. A nozzle mounting seat is fixedly installed on the drum fluidized bed body. An inclined rotating assembly connects the atomizing nozzle body and the nozzle mounting seat. A spray end baffle is fixedly installed at the end of the atomizing nozzle body. Multiple discharge ports are opened on the spray end baffle. Two air extraction drive assemblies are installed on the outside of the drum fluidized bed body, and a swing drive assembly is installed on the outside of each air extraction drive assembly. An anti-clogging assembly is installed on the inside of the drum fluidized bed body.

[0008] Each of the aforementioned air extraction transmission components includes a dust collection cone fixed to the outer wall of the atomizing nozzle body, and two air extraction pipes extending into the interior are fixedly provided on the arc-shaped outer wall of the dust collection cone, and the air outlet end of each air extraction pipe is connected to the air inlet end of the air pump with an air guide pipe.

[0009] The atomizing nozzle body has an atomizing air guide hole on its arc-shaped outer wall, and one end of the atomizing air guide hole is connected to the high-pressure pump that is matched with the ammonium calcium nitrate storage tank.

[0010] Preferably, each of the air extraction transmission components includes an air extraction narrow tube, which is fixedly installed at the top of the air extraction pipe. A reset conical plug is slidably installed inside the air extraction pipe. The dust accumulation cone is connected to the air pump inlet end through two sets of air extraction pipes and the air extraction narrow tube.

[0011] Preferably, the air extraction transmission assembly further includes an end connecting rod fixed to the top of the reset conical plug, and an anti-displacement block is fixedly provided on the arc-shaped outer wall of the end connecting rod. The swing transmission assembly includes a first connecting shaft and a second connecting shaft that are rotatably connected to the atomizing nozzle body and the dust accumulation cone, respectively. The first connecting shaft is located on one side of the second connecting shaft, and the anti-displacement block is located between the first connecting shaft and the second connecting shaft, and the anti-displacement block is engaged with the first connecting shaft.

[0012] Preferably, the air extraction transmission assembly further includes a connecting rotating block, which is rotatably connected to the end connecting rod and located above the anti-displacement block. A hinge block that rotates with the end connecting rod is fixedly installed on the connecting rotating block, and the hinge block rotates on the inner wall of the end connecting rod. A central fixing member is fixedly installed on the hinge block, and two side fixing members are fixedly installed on the inner wall of the end connecting rod. A limit spring is fixedly installed between each side fixing member and the central fixing member.

[0013] Preferably, the oscillating transmission assembly includes an oscillating component rotatably connected to the dust collection cone. One end of the oscillating component is fixedly provided with an oscillating counterweight. A reset slider extending to the outside of the oscillating counterweight is slidably provided inside the oscillating counterweight. Guide grooves are fixedly provided on both sides of the arc-shaped outer wall of the dust collection cone, and a concave guide strip in contact with the reset slider is fixedly provided inside each guide groove. A fixing spring is fixedly provided between the reset slider and the oscillating component. The concave guide strip has a shape that is higher at both ends and gradually concave in the middle, and the concave area of ​​the concave guide strip is located on the side close to the reset slider.

[0014] Preferably, the anti-clogging component includes a first turntable fixed to the end of the first connecting shaft. A reciprocating magnetic ring is slidably disposed on the inner wall of the atomizing nozzle body, and the first turntable is located outside the reciprocating magnetic ring. Multiple second turntables are disposed inside the reciprocating magnetic ring, and each second turntable is rotatably connected to the inner wall of the atomizing nozzle body. A first guide block is fixedly disposed at the end of the first turntable, and a second guide block is fixedly disposed at the end of the second turntable. The first guide block and the second guide block are slidably connected to the inner and outer sides of the reciprocating magnetic ring, respectively. A lower magnetic block body is fixedly disposed at the end of the second turntable away from the second guide block. An anti-clogging seat is slidably disposed inside the atomizing nozzle body and above the reciprocating magnetic ring. Multiple upper magnetic block bodies are fixedly disposed at the lower end of the anti-clogging seat. Each upper magnetic block body is attracted to one end of each lower magnetic block body. Multiple anti-clogging heads are fixedly disposed on the anti-clogging seat, and each anti-clogging head corresponds to one of the multiple discharge ports. The diameter of the second turntable is equal to the diameter of the first turntable.

[0015] Preferably, the tilting and rotating assembly includes an electric push rod body and a transverse sliding seat. The electric push rod body is mounted on the nozzle mounting base, and one end of the electric push rod body is fixedly connected to the guide rail through the transverse sliding seat. The transverse sliding seat slides on the nozzle mounting base. A linear guide block is fixedly provided on the atomizing nozzle body. A linear guide groove is provided on the guide rail, and the linear guide block slides inside the linear guide groove. The axis of the connecting end of the atomizing nozzle body coincides with the central axis of the drum fluidized bed body, and the central axis of the atomizing nozzle body and the central axis of the drum fluidized bed body form an acute angle.

[0016] Preferably, a processing technology for a rotary fluidized bed granulator for producing calcium ammonium nitrate, applied to the aforementioned rotary fluidized bed granulator for producing calcium ammonium nitrate, includes the following steps:

[0017] S1: When the outlet is blocked, firstly, turn off the electric push rod body to stop the rotation of the atomizing nozzle body, and start the air pump to pump air from the air pumping transmission assembly.

[0018] S2: Subsequently, with the cooperation of the air extraction transmission assembly, the anti-displacement block is separated from the end connecting rod, and at the same time, the connecting rotating block is moved between the first connecting shaft and the second connecting shaft to play a locking role.

[0019] S3: At this time, the electric push rod body is activated and the rotation of the atomizing nozzle body is restored with the cooperation of the tilting and rotating component. At this time, the swinging component swings back and forth under the gravity of the swinging counterweight, driving the anti-clogging component to periodically insert and withdraw multiple anti-clogging heads into multiple discharge ports to push out the blockage.

[0020] S4: Finally, the discharged impurities are collected and absorbed by the dust collection cone.

[0021] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0022] 1. This invention uses an inclined rotating component to drive the atomizing nozzle body to reciprocate around the connecting shaft between it and the drum-type fluidized bed body. The axis of the atomizing nozzle body is arranged at an acute angle to the central axis of the drum-type fluidized bed body. This structure allows the atomizing nozzle body to continuously change the spray angle during the spraying process, so that the ammonium calcium nitrate liquid can be uniformly covered on the surface of the particle layer in the fluidized bed in a dynamic fan shape. This avoids the problems of local over-wetting or uneven particle size that are easily caused by traditional fixed nozzles. At the same time, the reciprocating rotation promotes full contact between the liquid and the particles, which significantly improves the uniformity of granulation and the yield of finished products in one pass.

[0023] 2: This invention organically combines the air extraction transmission component, the swing transmission component, and the anti-clogging component. When the outlet of the atomizing nozzle body is blocked, the air extraction transmission component is used to extract air, and the change in air pressure drives the reset conical plug to slide, thereby causing the anti-displacement block to separate from the first connecting shaft. At the same time, the connecting rotating block is inserted between the first connecting shaft and the second connecting shaft, switching the swing transmission component from the locked state to the unlocked state. After unlocking, the swing transmission component swings back and forth with the rotation of the atomizing nozzle body under the action of the counterweight. Through the magnetic force of the first turntable, the reciprocating magnetic ring, the second turntable, and the upper and lower magnetic blocks, multiple anti-clogging heads are driven to periodically insert or withdraw from multiple outlets, thereby automatically pushing out the blockage. This process relies entirely on the air circuit and mechanical linkage of the equipment itself, without the need for manual disassembly and cleaning. It has a high degree of automation, and the periodic contact method between the anti-clogging head and the outlet avoids damage to the nozzle caused by hard pushing.

[0024] 3. In this invention, while the anti-clogging component periodically clears blockages, the dust-collecting cone, the extraction pipe, and the air pump in the air extraction transmission component remain connected and continuously extract air. On the one hand, the blockage particles pushed out from the discharge port are promptly sucked into the dust-collecting cone under negative pressure, preventing them from falling back into the fluidized bed or contaminating the finished product. On the other hand, since the atomizing nozzle body continues to rotate during the cleaning process, and an annular gap has been formed between the narrow extraction pipe and the reset cone-shaped plug, the air extraction action can effectively suction dust from the lower part of the drum-type fluidized bed body through the dust-collecting cone, thereby simultaneously collecting the material dust that has accumulated at the bottom for a long time. This design completes both the blockage removal and bottom dust recovery tasks simultaneously using the original air extraction transmission component without adding additional power components. It avoids the impact of dust accumulation on the granulation environment and realizes the recycling of materials, significantly improving the overall efficiency of the equipment. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the drum-type fluidized bed body and atomizing nozzle assembly of the present invention;

[0026] Figure 2 This is a schematic diagram of the atomizing nozzle assembly structure of the present invention;

[0027] Figure 3 This is a schematic cross-sectional view of one side of the atomizing nozzle assembly of the present invention;

[0028] Figure 4 This is a schematic cross-sectional view of the atomizing nozzle assembly of the present invention from another side.

[0029] Figure 5 For the present invention Figure 4 A magnified view of part A in the image;

[0030] Figure 6 This is a schematic diagram of the cross-sectional structure of the dust collection cone of the present invention;

[0031] Figure 7 For the present invention Figure 6 A magnified view of part B in the image;

[0032] Figure 8 For the present invention Figure 6 A magnified view of part C;

[0033] Figure 9 This is a schematic diagram of the connection structure between the air extraction transmission component and the swing transmission component of the present invention;

[0034] Figure 10 This is a schematic diagram of the cross-sectional structure of the end connecting rod of the present invention;

[0035] Figure 11 This is a schematic diagram of the connection structure between the swing transmission component and the anti-blocking component of the present invention.

[0036] In the diagram: 100, drum-type fluidized bed body; 110, granulation conveyor body;

[0037] 200. Atomizing nozzle assembly; 210. Nozzle mounting base; 220. Atomizing nozzle body; 221. Spray end baffle; 222. Discharge port; 230. Tilting and rotating assembly; 231. Electric push rod body; 232. Horizontal movement seat; 233. Guide rail; 234. Straight guide groove; 235. Straight movement guide block;

[0038] 300. Air extraction drive assembly; 310. Dust collection cone; 320. Air extraction pipe; 330. Narrow air extraction pipe; 340. Reset conical plug; 350. End connecting rod; 351. Side fixing component; 360. Anti-displacement block; 370. Connecting rotating block; 371. Hinge block; 372. Center fixing component; 373. Limiting spring;

[0039] 400. Swing transmission assembly; 410. Swing component; 411. First connecting shaft; 412. Second connecting shaft; 420. Swing counterweight; 430. Reset slider; 440. Guide groove; 450. Concave guide strip;

[0040] 500 Anti-blocking component; 510 First turntable; 511 First guide block; 520 Reciprocating magnetic ring; 530 Second turntable; 531 Second guide block; 540 Lower magnetic block body; 550 Anti-blocking seat; 551 Anti-blocking head; 560 Upper magnetic block body. Detailed Implementation

[0041] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this disclosure. All other embodiments obtained by those skilled in the art based on the described embodiments of this disclosure without creative effort are within the scope of protection of this disclosure.

[0042] Unless otherwise defined, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "comprising" or "including," and similar terms used in this disclosure, mean that an element or object preceding the term encompasses the elements or objects listed following the term and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; these relative positional relationships may change accordingly when the absolute position of the described objects changes.

[0043] like Figures 1 to 11 As shown, the present invention provides a drum fluidized bed granulator and its processing technology for producing calcium ammonium nitrate, including a drum fluidized bed body 100 and an atomizing nozzle assembly 200 disposed therein. A granulation conveyor body 110 is disposed on one side of the drum fluidized bed body 100, and an air pump is installed on the granulation conveyor body 110.

[0044] The atomizing nozzle assembly 200 includes an atomizing nozzle body 220 rotatably connected inside the drum fluidized bed body 100. A nozzle mounting seat 210 is fixedly installed on the drum fluidized bed body 100. An inclined rotating assembly 230 is connected between the atomizing nozzle body 220 and the nozzle mounting seat 210. A spray end baffle 221 is fixedly installed at the end of the atomizing nozzle body 220. Multiple discharge ports 222 are opened on the spray end baffle 221. Two air extraction transmission assemblies 300 are provided on the outside of the drum fluidized bed body 100, and a swing transmission assembly 400 is provided on the outside of each air extraction transmission assembly 300. An anti-clogging assembly 500 is provided on the inside of the drum fluidized bed body 100.

[0045] Each suction transmission assembly 300 includes a dust collection cone 310 fixed to the outer wall of the atomizing nozzle body 220, and two suction pipes 320 extending into the interior are fixedly provided on the arc-shaped outer wall of the dust collection cone 310, and the air outlet of each suction pipe 320 is connected to the air inlet of the air pump with an air guide pipe.

[0046] The atomizing nozzle body 220 has an atomizing air guide hole on its arc-shaped outer wall, and one end of the atomizing air guide hole is connected to the high-pressure pump that is matched with the ammonium calcium nitrate storage tank.

[0047] Each air extraction transmission assembly 300 includes an air extraction narrow tube 330, and the air extraction narrow tube 330 is fixedly installed at the top of the air extraction pipe 320. A reset conical plug 340 is slidably installed inside the air extraction pipe 320. The dust accumulation cone 310 is connected to the air pump inlet end through two sets of air extraction pipes 320 and air extraction narrow tubes 330.

[0048] The air extraction transmission assembly 300 also includes an end connecting rod 350 fixed to the top of the reset cone plug 340, and an anti-displacement block 360 is fixedly provided on the arc-shaped outer wall of the end connecting rod 350. The swing transmission assembly 400 includes a first connecting shaft 411 and a second connecting shaft 412 that are rotatably connected to the atomizing nozzle body 220 and the dust accumulation cone 310, respectively. The first connecting shaft 411 is located on one side of the second connecting shaft 412, and the anti-displacement block 360 is located between the first connecting shaft 411 and the second connecting shaft 412, and the anti-displacement block 360 is engaged with the first connecting shaft 411.

[0049] The air extraction transmission assembly 300 also includes a connecting rotating block 370, which is rotatably connected to the end connecting rod 350. The connecting rotating block 370 is located above the anti-displacement block 360. A hinge block 371 that rotates with the end connecting rod 350 is fixedly installed on the connecting rotating block 370, and the hinge block 371 rotates on the inner wall of the end connecting rod 350. A central fixing member 372 is fixedly installed on the hinge block 371. Two side fixing members 351 are fixedly installed on the inner wall of the end connecting rod 350, and a limit spring 373 is fixedly installed between each side fixing member 351 and the central fixing member 372.

[0050] A square limiting strip is fixedly installed at the bottom of the reset conical plug 340, and the square limiting strip slides on the inner wall of the suction pipe 320;

[0051] When the spray end of the atomizing nozzle body 220 becomes blocked, the electric push rod body 231 is closed, stopping the rotation of the atomizing nozzle body 220. Air is then drawn from the two suction pipes 320 located on both sides of the atomizing nozzle body 220. Since the narrow suction pipe 330 fixed to the top of the suction pipe 320 is in a closed state with the reset conical plug 340, the air pressure inside the suction pipe 320 at one end of the reset conical plug 340 decreases due to the air pressure difference. This causes the square limiting strip fixed to the bottom of the reset conical plug 340 to slide against the inner wall of the suction pipe 320. At this time, the narrow suction pipe 330 fixed to the reset conical plug 340 and the suction pipe 320... An annular gap appears between them, allowing air inside the dust accumulation cone 310 to enter the suction pipe 320 through the narrow suction pipe 330 and be extracted. The sliding of the reset cone plug 340 compresses the reset spring fixed between the reset cone plug 340 and the inner wall of the suction pipe 320, and at the same time pulls the anti-displacement block 360, which is fixedly connected to the top of the reset cone plug 340 through the end connecting rod 350, to move downward and separate from the first connecting shaft 411 and the second connecting shaft 412. Meanwhile, the connecting block 370, which is rotatably connected to the end connecting rod 350, can be engaged between the first connecting shaft 411 and the second connecting shaft 412, thus unlocking the first connecting shaft 411 and the second connecting shaft 412.

[0052] The swing transmission assembly 400 includes a swing member 410 rotatably connected to the dust collection cone 310. A swing counterweight 420 is fixedly provided at one end of the swing member 410. A reset slider 430 extending to the outside of the swing counterweight 420 is slidably provided inside the swing counterweight 420. Guide grooves 440 are fixedly provided on both sides of the arc-shaped outer wall of the dust collection cone 310, and a concave guide strip 450 that contacts the reset slider 430 is fixedly provided inside each guide groove 440. A fixing spring is fixedly provided between the reset slider 430 and the swing member 410. The concave guide strip 450 has a shape that is higher at both ends and gradually concave in the middle, and the concave area of ​​the concave guide strip 450 is located on the side close to the reset slider 430.

[0053] The anti-clogging component 500 includes a first turntable 510 fixed to the end of the first connecting shaft 411. A reciprocating magnetic ring 520 is slidably disposed on the inner wall of the atomizing nozzle body 220, with the first turntable 510 located outside the reciprocating magnetic ring 520. A plurality of second turntables 530 are disposed inside the reciprocating magnetic ring 520, and each second turntable 530 is rotatably connected to the inner wall of the atomizing nozzle body 220. A first guide block 511 is fixedly disposed at the end of the first turntable 510, and a second guide block 531 is fixedly disposed at the end of the second turntable 530. The first guide block 511 and the second guide block 531 are respectively connected to the inner side of the reciprocating magnetic ring 520. The second turntable 530 is slidably connected to the outside. A lower magnetic block body 540 is fixedly installed at one end of the second turntable 530 away from the second guide block 531. An anti-clogging seat 550 is slidably installed inside the atomizing nozzle body 220 and above the reciprocating magnetic ring 520. Multiple upper magnetic block bodies 560 are fixedly installed at the lower end of the anti-clogging seat 550. Each upper magnetic block body 560 is attracted to one end of each lower magnetic block body 540. Multiple anti-clogging heads 551 are fixedly installed on the anti-clogging seat 550. Each anti-clogging head 551 corresponds to a multiple discharge port 222. The diameter of the second turntable 530 is the same as that of the first turntable 510.

[0054] The electric push rod body 231 is activated, and with the cooperation of the tilting and rotating assembly 230, the atomizing nozzle body 220 rotates. At this time, under the self-weight of the swing counterweight 420, the second connecting shaft 412, which is fixedly connected to the swing member 410, rotates 180 degrees around the connection position with the dust accumulation cone 310. At this time, under the snapping action of the connecting rotating block 370, the first connecting shaft 411 is driven to rotate back and forth, and at the same time, the first turntable 510 fixed at its end is driven to rotate. Then, the first guide block 511 moves in a circle around the central axis of the first turntable 510. Block 511 slides inside the outer arc-shaped groove on the arc-shaped outer wall of the reciprocating magnetic ring 520, thereby causing the reciprocating magnetic ring 520 to slide up and down reciprocally on the inner wall of the atomizing nozzle body 220. Simultaneously, it causes the second guide block 531, which slides inside the reciprocating magnetic ring 520, to rotate around the connection point between the second turntable 530 and the atomizing nozzle body 220. At this time, the second guide block 531 performs a circular motion around the central axis of the second turntable 530. Since the diameter of the second turntable 530 is equal to the diameter of the first turntable 510, the lower magnetic block body 540, which is fixedly connected to the end of the second turntable 530, can rotate one revolution. When the swing counterweight 420 is not... During rotation, the multiple lower magnetic block bodies 540 can attract each other to the multiple upper magnetic block bodies 560 fixedly connected to the bottom of the anti-clogging seat 550. At this time, the multiple anti-clogging heads 551 on the top of the anti-clogging seat 550 and the multiple discharge ports 222 on the spray end baffle 221 are in a separated state. When the swing counterweight 420 rotates 90 degrees, the multiple lower magnetic block bodies 540 can be rotated 180 degrees under the cooperation of the swing transmission component 400 and the anti-clogging component 500. At this time, the multiple lower magnetic block bodies 540 and the multiple upper magnetic block bodies 560 repel each other, thereby pushing the anti-clogging seat 550 to slide on the inner wall of the atomizing nozzle body 220. The multiple anti-blocking heads 551 fixed at the top of the anti-blocking seat 550 are inserted into the multiple discharge ports 222 respectively. Since the shaft length of the multiple anti-blocking heads 551 is larger than the shaft length of the discharge port 222, the impurities blocking the discharge port 222 are discharged to the outside. Finally, under the suction action of the dust collection cone 310, the discharged impurities are collected. When the swing counterweight 420 rotates 180 degrees, the multiple lower magnetic block bodies 540 and the upper magnetic block bodies 560 are attracted to each other under the cooperation of the swing transmission component 400 and the anti-blocking component 500, thereby separating the multiple anti-blocking heads 551 from the discharge port 222.

[0055] The tilting and rotating assembly 230 includes an electric push rod body 231 and a transverse shift seat 232. The electric push rod body 231 is mounted on the nozzle mounting base 210, and one end of the electric push rod body 231 is fixedly connected to the guide rail 233 through the transverse shift seat 232. The transverse shift seat 232 slides on the nozzle mounting base 210. A linear guide block 235 is fixedly provided on the atomizing nozzle body 220. A linear guide groove 234 is provided on the guide rail 233, and the linear guide block 235 slides inside the linear guide groove 234. The axis of the connecting end of the atomizing nozzle body 220 coincides with the central axis of the drum fluidized bed body 100, and the atomizing nozzle body 220 and the central axis of the drum fluidized bed body 100 form an acute angle.

[0056] During the granulation of calcium ammonium nitrate in the drum fluidized bed body 100, the calcium ammonium nitrate liquid is atomized by the atomizing nozzle assembly 200 inside the drum fluidized bed body 100 and sprayed onto the granules. During this process, the electric push rod body 231 can push the transverse sliding seat 232 sliding on the nozzle mounting seat 210 to reciprocate laterally, and then pull the guide rail 233 fixed on the transverse sliding seat 232 to reciprocate laterally. At this time, the straight guide block 235 slides with the straight guide groove 234 opened on the guide rail 233. In conjunction with the atomizing nozzle body 220, which is rotatably connected to the nozzle mounting base 210, the tilting rotation component 230 can drive the atomizing nozzle body 220 to rotate around the connection position with the nozzle mounting base 210. At this time, ammonium calcium nitrate liquid is introduced into the atomizing nozzle body 220, and it is sprayed out from the multiple spray end baffles 221 on the spray end baffle 221. The mutual cooperation between the tilting rotation component 230 and the atomizing nozzle body 220 plays the role of uniformly spraying the ammonium calcium nitrate liquid.

[0057] S1: When the outlet 222 is blocked, firstly, the electric push rod body 231 is turned off to stop the rotation of the atomizing nozzle body 220, and the air pump is started to pump air from the air pumping transmission assembly 300.

[0058] S2: Subsequently, with the cooperation of the air extraction transmission assembly 300, the anti-displacement block 360 is separated from the end connecting rod 350, and at the same time, the connecting rotating block 370 is moved between the first connecting shaft 411 and the second connecting shaft 412 to play a locking role.

[0059] S3: At this time, the electric push rod body 231 is activated and the rotation of the atomizing nozzle body 220 is restored with the cooperation of the tilting rotation component 230. At this time, the swinging component 410 swings back and forth under the gravity of the swinging counterweight 420, driving the anti-blocking component 500 to drive multiple anti-blocking heads 551 to periodically insert and withdraw from multiple discharge ports 222, pushing out the blockage.

[0060] S4: Finally, the discharged impurities are collected and absorbed by the dust collection cone 310.

[0061] The working principle and usage process of this invention are as follows: During the granulation process inside the drum-type fluidized bed body 100, the ammonium calcium nitrate liquid is atomized by the atomizing nozzle assembly 200 inside the drum-type fluidized bed body 100 and sprayed onto the particles. During this process, the electric push rod body 231 can push the transverse sliding seat 232 sliding on the nozzle mounting base 210 to reciprocate laterally, and then pull the guide rail 233 fixed on the transverse sliding seat 232 to reciprocate laterally. At this time, the straight guide block 235 slides inside the straight guide groove 234 opened on the guide rail 233. Since the atomizing nozzle body 220 is rotatably connected to the nozzle mounting base 210, it can be driven by the tilting rotation assembly 230 to rotate around the nozzle mounting base 210. When the nozzle rotates at the receiving position, ammonium calcium nitrate solution is introduced into the atomizing nozzle body 220, causing it to be sprayed out through multiple spray end baffles 221 on the spray end baffle 221. The interaction between the tilting and rotating assembly 230 and the atomizing nozzle body 220 achieves the effect of uniformly spraying the ammonium calcium nitrate solution. Due to the water absorption of the ammonium calcium nitrate solution, blockage may occur at the spray end of the atomizing nozzle body 220 during prolonged atomization spraying. When multiple outlets 222 at the spray end of the atomizing nozzle body 220 become blocked, the electric push rod body 231 is closed, stopping the rotation of the atomizing nozzle body 220. At this time, the reset slider 430 on the rocking counterweight 420, connected by a fixed spring, can slide on the concave guide strip 45. On the inclined outer wall on side 0, since the concave guide strip 450 is shaped with higher ends and a gradually concave middle, under the combined force of the weight of the rocker counterweight 420 and the elastic force of the fixed spring, the reset slider 430 can gradually slide to the center position of the concave guide strip 450. Then, by evacuating the two suction pipes 320 respectively set on both sides of the atomizing nozzle body 220, air is drawn out. Since the narrow suction pipe 330 fixed at the top of the suction pipe 320 and the reset conical plug 340 are in a closed state, the air pressure inside the suction pipe 320 at one end of the reset conical plug 340 decreases due to the air pressure difference. As a result, the square limiting strip fixed at the bottom of the reset conical plug 340 slides under the pressure difference. On the inner wall of the extraction pipe 320, an annular gap appears between the narrow extraction pipe 330 fixed to the reset conical plug 340 and the extraction pipe 320, allowing air inside the dust accumulation cone 310 to enter the extraction pipe 320 through the narrow extraction pipe 330 and be extracted. The sliding of the reset conical plug 340 compresses the reset spring fixed between the reset conical plug 340 and the inner wall of the extraction pipe 320, and simultaneously pulls the anti-displacement block 360, which is fixedly connected to the top of the reset conical plug 340 via the end connecting rod 350, downward, and separates from the first connecting shaft 411 and the second connecting shaft 412. At the same time, the connecting block 370, which is rotatably connected to the end connecting rod 350, can be engaged between the first connecting shaft 411 and the second connecting shaft 412.At this time, the first connecting shaft 411 can rotate together with the rocker arm 410. The electric push rod body 231 is activated, and with the cooperation of the tilting rotation assembly 230, the atomizing nozzle body 220 rotates. Since the second connecting shaft 412 is rotatably connected to the dust collection cone 310, and the atomizing nozzle body 220, the two pairs of suction transmission assemblies 300, and the rocker transmission assembly 400 are all tilted, and the axis of the connecting end of the atomizing nozzle body 220 coincides with the central axis of the drum-type fluidized bed body 100, under the weight of the rocker counterweight 420, the second connecting shaft 412, which is fixedly connected to the rocker arm 410, can reciprocate 180 degrees around the connection position with the dust collection cone 310. At this time, the connecting rotating block 3... Under the snap-fit ​​action of 70, the first connecting shaft 411 is synchronously driven to reciprocate, and at the same time, the first turntable 510 fixed at its end is driven to rotate. This causes the first guide block 511 to move in a circular motion around the central axis of the first turntable 510. Since the first guide block 511 slides inside the outer arc groove opened on the arc-shaped outer wall of the reciprocating magnetic ring 520, the reciprocating magnetic ring 520 is driven to slide up and down in a reciprocating motion on the inner wall of the atomizing nozzle body 220. At the same time, the second guide block 531 sliding inside the reciprocating magnetic ring 520 rotates around the connection position between the second turntable 530 and the atomizing nozzle body 220. At this time, the second guide block 531 moves in a circular motion around the central axis of the second turntable 530. Since the diameter of the second turntable 530 is the same as the diameter of the first turntable 510, the second guide block 531 moves in a circular motion around the central axis of the second turntable 530. With equal diameters, the lower magnetic block body 540 fixedly connected to the end of the second turntable 530 can reciprocate one revolution. When the swing counterweight 420 is not rotating, the multiple lower magnetic block bodies 540 can attract each other with the multiple upper magnetic block bodies 560 fixedly connected to the bottom of the anti-blocking seat 550. At this time, the multiple anti-blocking heads 551 on the top of the anti-blocking seat 550 and the multiple discharge ports 222 on the spray end baffle 221 are in a state of separation. When the swing counterweight 420 rotates 90 degrees, the multiple lower magnetic block bodies 540 can be rotated 180 degrees under the cooperation of the swing transmission component 400 and the anti-blocking component 500. At this time, the multiple lower magnetic block bodies 540 and the multiple upper magnetic block bodies 560 repel each other, thereby pushing the anti-blocking seat 550 to slide on the atomizing nozzle. The inner wall of body 220 drives multiple anti-blocking heads 551 fixed to the top of anti-blocking seat 550 to be inserted into multiple discharge ports 222 respectively. Since the axial length of multiple anti-blocking heads 551 is larger than the axial length of discharge ports 222, the impurities blocking the discharge ports 222 are discharged to the outside. Finally, under the suction action of dust collection cone 310, the discharged impurities are collected. When the swing counterweight 420 rotates 180 degrees, with the cooperation of swing transmission component 400 and anti-blocking component 500, multiple lower magnetic block bodies 540 and upper magnetic block bodies 560 are attracted to each other, thereby separating multiple anti-blocking heads 551 from discharge ports 222. And the reciprocating rotating atomizing nozzle body 220 can be driven by the suction action of dust collection cone 310.The material dust accumulated on the lower inner wall of the drum-type fluidized bed body 100 can be collected. When cleaning is completed, the suction pipe 320 is stopped. At this time, the reset conical plug 340, under the action of the reset spring on the arc-shaped outer wall of the square limit strip, makes the reset conical plug 340 fit against the inner wall of the narrow suction pipe 330. At the same time, it pushes the connecting rotating block 370 to separate from the first connecting shaft 411 and the second connecting shaft 412. Simultaneously, the anti-displacement block 360 fixed on the end connecting rod 350 engages with the first connecting shaft 411, which prevents the anti-blocking seat 550 from moving and causing the anti-blocking head 551 to block the discharge port 222 during subsequent atomization spraying.

[0062] The above embodiments are merely exemplary embodiments of the present invention and are not intended to limit the present invention. The scope of protection of the present invention is defined by the claims. Those skilled in the art can make various modifications or equivalent substitutions to the present invention within its spirit and scope of protection, and such modifications or equivalent substitutions should also be considered to fall within the scope of protection of the present invention.

Claims

1. A drum-type fluidized bed granulator for producing calcium ammonium nitrate, comprising a drum-type fluidized bed body (100) and an atomizing nozzle body (220) disposed therein, characterized in that, Also includes: A tilting rotation assembly (230) drives the atomizing nozzle body (220) to reciprocate around the connecting shaft between it and the drum fluidized bed body (100), and the axis of the atomizing nozzle body (220) is arranged at an acute angle to the central axis of the drum fluidized bed body (100). An air extraction drive assembly (300) is disposed on the outside of the drum fluidized bed body (100) and connected to the atomizing nozzle body (220); A rocking drive assembly (400) is disposed outside the suction drive assembly (300); and, An anti-blocking component (500) is disposed inside the drum fluidized bed body (100) and is linked with the swaying transmission component (400); When the air extraction transmission assembly (300) extracts air, it unlocks the swing transmission assembly (400). In the unlocked state, the swing transmission assembly (400) swings back and forth with the rotation of the atomizing nozzle body (220) and drives the anti-clogging assembly (500) to clear the discharge port (222) of the atomizing nozzle body (220). The air extraction drive assembly (300) includes: A dust collection cone (310) is fixed to the outer wall of the atomizing nozzle body (220); An air extraction pipe (320) extends at one end into the interior of the dust collection cone (310) and at the other end is used to connect to an air pump; A narrow suction tube (330) is fixedly installed at the top end of the suction tube (320); The reset conical plug (340) is slidably disposed inside the suction pipe (320) to close or open the channel between the suction narrow pipe (330) and the suction pipe (320); The end connecting rod (350) is fixed to the top of the reset conical plug (340); An anti-displacement block (360) is fixed to the end connecting rod (350) and engages with the rocking transmission assembly (400); and, The connecting block (370) is rotatably connected to the end connecting rod (350); The swing transmission assembly (400) includes a first connecting shaft (411) and a second connecting shaft (412) that are rotatably connected to the atomizing nozzle body (220) and the dust collection cone (310) respectively. The anti-displacement block (360) is located between the first connecting shaft (411) and the second connecting shaft (412) and is engaged with the first connecting shaft (411). When the air extraction pipe (320) extracts air, the reset conical plug (340) slides, causing the anti-displacement block (360) to separate from the first connecting shaft (411), and causing the connecting rotating block (370) to be inserted between the first connecting shaft (411) and the second connecting shaft (412), thereby unlocking.

2. The rotary fluidized bed granulator for producing calcium ammonium nitrate according to claim 1, characterized in that: The swing transmission assembly (400) also includes: A swinging component (410) is rotatably connected at one end to the dust accumulation cone (310), and a second connecting shaft (412) is disposed on the swinging component (410); A rocking counterweight (420) is fixed to the other end of the rocking component (410); The reset slider (430) is slidably disposed inside the rocking counterweight (420); and, The concave guide strip (450) is fixed to the outer wall of the dust accumulation cone (310) through the guide groove (440). The reset slider (430) slides in contact with the concave area of ​​the concave guide strip (450), so that the rocker (410) can reciprocate under the gravity of the rocker counterweight (420).

3. A drum-type fluidized bed granulator for producing calcium ammonium nitrate according to claim 2, characterized in that: The anti-blocking component (500) includes: The first turntable (510) is fixed to the end of the first connecting shaft (411); A reciprocating magnetic ring (520) is slidably disposed on the inner wall of the atomizing nozzle body (220) and is connected to the first turntable (510) in a transmission manner; Multiple second turntables (530) are rotatably connected to the inner wall of the atomizing nozzle body (220), and each second turntable (530) is connected to the reciprocating magnetic ring (520) in a transmission manner; Multiple lower magnetic block bodies (540) are respectively fixed on each of the second turntables (530); An anti-clogging seat (550) is slidably disposed inside the atomizing nozzle body (220), and a plurality of anti-clogging heads (551) corresponding one-to-one with the discharge port (222) are fixedly disposed thereon; and, Multiple upper magnetic block bodies (560) are fixed on the anti-blocking seat (550), and each upper magnetic block body (560) corresponds to a lower magnetic block body (540) and magnetically engages with it; The rotation of the first turntable (510) is transmitted through the reciprocating magnetic ring (520) and the second turntable (530), causing the lower magnetic block body (540) to periodically attract or repel the upper magnetic block body (560), thereby driving the anti-blocking head (551) to periodically insert or withdraw from the discharge port (222).

4. A drum-type fluidized bed granulator for producing calcium ammonium nitrate according to claim 3, characterized in that: The first turntable (510) is fixedly provided with a first guide block (511) at its end, and the second turntable (530) is fixedly provided with a second guide block (531) at its end. The inner and outer sides of the reciprocating magnetic ring (520) are slidably connected to the first guide block (511) and the second guide block (531) respectively.

5. A drum-type fluidized bed granulator for producing calcium ammonium nitrate according to claim 4, characterized in that: The tilting rotation assembly (230) includes: The electric push rod body (231) is installed on the nozzle mounting seat (210) of the drum fluidized bed body (100); The guide rail (233) is connected to the telescopic end of the electric push rod body (231) via the transverse sliding seat (232); and, The linear guide block (235) is fixed on the atomizing nozzle body (220) and slidably disposed in the linear guide groove (234) of the guide rail (233).

6. A processing method for producing calcium ammonium nitrate using a drum-type fluidized bed granulator, comprising the drum-type fluidized bed granulator for producing calcium ammonium nitrate as described in any one of claims 1-5, characterized in that, Includes the following steps: S1: When the outlet (222) of the atomizing nozzle body (220) is blocked, the tilting rotation assembly (230) stops driving the atomizing nozzle body (220) and the suction transmission assembly (300) is used to suction air. S2: The air pumping transmission assembly (300) unlocks the swing transmission assembly (400) under the action of air pumping. S3: Restart the tilting rotation component (230) to drive the atomizing nozzle body (220) to rotate. After unlocking, the swing transmission component (400) swings back and forth with the rotation of the atomizing nozzle body (220) under the action of gravity, and drives the anti-blocking component (500) to drive multiple anti-blocking heads (551) to periodically insert and withdraw from multiple discharge ports (222) to push out the blockage. S4: The ejected blockage is collected by the suction action of the suction drive assembly (300).

7. The processing technology according to claim 6, characterized in that, In step S2, the air pumping transmission assembly (300) drives its reset cone plug (340) to slide through the air pressure difference, thereby causing the anti-displacement block (360) to separate from the first connecting shaft (411) of the swing transmission assembly (400), and at the same time, its connecting rotating block (370) is inserted between the first connecting shaft (411) and the second connecting shaft (412), thereby unlocking.

8. The processing technology according to claim 7, characterized in that, In step S3, the driving process of the anti-clogging component (500) is as follows: the reciprocating swing of the swing transmission component (400) drives its first turntable (510) to rotate. The first turntable (510) is driven by the reciprocating magnetic ring (520) and the second turntable (530) to make the lower magnetic block body (540) periodically attract or repel the upper magnetic block body (560), thereby driving the anti-clogging seat (550) with the anti-clogging head (551) fixed to slide back and forth inside the atomizing nozzle body (220).

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