A high tower melt granulation compound fertilizer production device and production process thereof

Abstract

The present application relates to a high-tower melt granulation compound fertilizer production device and its production process. The production device includes a drying tower body, on the side wall of which an air inlet is opened; a mixing box, which is erected on the side of the drying tower body away from the ground and connected to the drying tower body; a receiving screen, which is located on the side of the drying tower body away from the mixing box to receive the dried fertilizer particles; a nozzle plate, which is located on the side of the mixing box close to the ground and connected to the mixing box, and a plurality of nozzles are arranged on the nozzle plate to granulate the mixed materials; a cleaning component, which includes: a frame, which is located in the drying tower body and can move along the length direction of the drying tower body; a plurality of cleaning brushes are arranged, and the plurality of cleaning brushes correspond to the nozzles one by one, and the cleaning brushes can be plugged and matched with the nozzles of the nozzles; a buoyancy cloth, which is connected to the frame; the setting of the cleaning component achieves the purpose of improving the nozzle blockage that affects the operation of the compound fertilizer production device; the production process of the present application has the advantage of simple operation.

Description

Technical Field

[0001] The present application relates to the technical field of compound fertilizer production, and in particular to a high-tower melt granulation compound fertilizer production device and a production process thereof. Background Art

[0002] The high tower melt granulation compound fertilizer is made by heating and melting solid urea or ammonium nitrate (ammonium nitrate phosphorus, etc.) into a molten liquid. The molten liquid after evaporation and concentration can also be used directly. The corresponding phosphate fertilizer, potash fertilizer, filler and additives are added to the molten liquid to make a mixed slurry. The mixed slurry enters the granulation tower after the nozzle of the nozzle plate. In the process of descending from the high tower, it interacts with the gas resistance rising from the bottom of the tower, exchanges heat with it, and falls to the bottom of the tower. The granular material falling to the bottom of the tower is screened to obtain granular compound fertilizer.

[0003] The above-mentioned related technologies have the following defects: when the compound fertilizer production device stops running, part of the mixed material will remain in the nozzle of the nozzle plate, and this part of the mixed slurry will easily solidify at the nozzle after cooling, causing the nozzle to be blocked, affecting the operation of the compound fertilizer production device. Summary of the invention

[0004] In order to improve the problem of nozzle clogging affecting the operation of a compound fertilizer production device, the present application provides a high-tower melt granulation compound fertilizer production device and a production process thereof.

[0005] In the first aspect, the present application provides a high-tower melt granulation compound fertilizer production device, which adopts the following technical solution:

[0006] A high-tower melt granulation compound fertilizer production device, comprising:

[0007] The drying tower body has an air inlet on its side wall;

[0008] A mixing box is used for mixing materials, and the mixing box is set up on the side of the drying tower body away from the ground, and the mixing box is connected to the drying tower body;

[0009] A receiving screen is used for screening the fertilizer particles, and the receiving screen is located on the side of the drying tower body away from the mixing box to receive the dried fertilizer particles;

[0010] A nozzle plate is located on a side of the mixing box close to the ground and connected to the mixing box, and a plurality of nozzles are arranged on the nozzle plate to granulate the mixed materials;

[0011] Cleaning kit, including:

[0012] The frame is located inside the drying tower body and can move along the length direction of the drying tower body;

[0013] A plurality of cleaning brushes are provided, each of which corresponds to the nozzle one by one, and the cleaning brushes can be plugged and matched with the nozzle of the nozzle;

[0014] The buoyancy cloth is connected to the frame.

[0015] Furthermore, the frame includes:

[0016] Ring frame, in the shape of a ring;

[0017] A plurality of rotating plates are provided, one side of each of the plurality of rotating plates is rotatably connected to the ring frame, and the other end rotates toward or away from the center line of the ring frame; a plurality of cleaning brushes are divided into a plurality of groups, one group of cleaning brushes corresponds to a rotating plate and is connected to the rotating plate; a plurality of buoyancy cloths are provided, the plurality of buoyancy cloths are arranged along the circumference of the ring frame, and both sides of the buoyancy cloths are connected to a rotating plate;

[0018] The drying tower body is provided with an adjusting component for adjusting the rotation angle of the rotating plate.

[0019] Furthermore, the adjustment component includes:

[0020] An adjusting ring is sleeved on the outside of the plurality of nozzles and can move along the length direction of the drying tower body, and the adjusting ring can contact with the rotating plate;

[0021] The adjusting magnet is located outside the drying tower body and is magnetically connected to the adjusting ring;

[0022] An adjusting torsion spring is used to connect the rotating plate and the ring frame, and under the elastic force of the adjusting torsion spring, the free end of the rotating plate rotates to a position close to the center line of the ring frame;

[0023] The drying tower body is provided with a moving component for driving and adjusting the movement of the magnet.

[0024] Furthermore, a connecting magnet is provided on the drying tower body, the connecting magnet is magnetically connected to the ring frame, and the connecting magnet is connected to the drying tower body through a moving component so that the connecting magnet can move towards or away from the ground.

[0025] Furthermore, the mobile component includes:

[0026] A mobile motor is fixedly connected to the side wall of the drying tower;

[0027] Move blocks;

[0028] The movable lead screw is rotatably connected to the side wall of the drying tower body and is coaxially fixedly connected to the output shaft of the movable motor. The connecting magnet is connected to the movable block, and the movable block is threadedly connected to the movable lead screw. The adjusting magnet is located on the side of the movable block away from the ground and is sleeved on the outside of the movable lead screw.

[0029] The moving rod is fixedly connected to the side wall of the drying tower body, and the connecting magnet is slidably connected to the moving rod

[0030] The positioning block is fixedly connected to the side wall of the drying tower body, and the positioning block is located on the moving track of the adjusting magnet.

[0031] Furthermore, an inspection port is provided on the side wall of the drying tower body, the frame body is ring-shaped, and the frame body is divided into two rotatably connected half rings, and one of the half rings is provided with a locking member for locking the rotation angle of the two half rings.

[0032] Furthermore, bristles are arranged on the peripheral side walls of the frame.

[0033] Furthermore, one end of the drying tower body close to the ground is configured to be cone-shaped, and two air inlets are provided, and the two air inlets are arranged in sequence along the direction close to the ground, wherein the air inlet close to the ground is located in the cone of the drying tower body, and the opening direction of the air inlet is tangent to the side wall of the drying tower body.

[0034] Furthermore, one end of the drying tower body close to the ground is configured to be conical, and a second air inlet is provided on the side wall of the drying tower body, and the opening direction of the second air inlet is tangent to the side wall of the drying tower body.

[0035] In the second aspect, the present application provides a high tower melt granulation compound fertilizer production process, which adopts the following technical solution:

[0036] A high tower melt granulation compound fertilizer production process comprises the following steps:

[0037] S1. Transport each material to a mixing box and mix them evenly to obtain a mixture;

[0038] S2, after the mixture is sprayed out through the nozzle on the nozzle plate, it meets the gas in the drying tower body and is dried to obtain particles;

[0039] S3. After passing through the drying tower, the granules fall into the receiving screen for screening to obtain compound fertilizer.

[0040] In summary, the beneficial technical effects of this application are:

[0041] The cleaning assembly is provided so that the cleaning brush can clean the nozzle, and the buoyancy cloth is provided so that the cleaning assembly can move toward the nozzle under the action of wind force in the drying tower body, so that the cleaning brush can be inserted into the corresponding nozzle to clean the nozzle, thereby making the nozzle less likely to be blocked, thereby achieving the purpose of improving the operation of the compound fertilizer production device affected by nozzle blockage;

[0042] The arrangement of the brushes on the frame enables the brushes to clean the inner wall of the drying tower body, thereby reducing the amount of material accumulated on the inner wall of the tower body.

[0043] The production process of the present application has the advantage of simple operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0045] Figure 2 It is a partial cross-sectional view of the drying tower body in the embodiment of the present application.

[0046] Figure 3 It is an enlarged schematic diagram of the cleaning component in the embodiment of the present application.

[0047] 1. The drying tower body is provided with a plurality of nozzles, each of which is provided with a plurality of nozzles, and each of which is provided with a plurality of nozzles. The plurality of nozzles are provided with a plurality of nozzles, each of which is provided with a plurality of nozzles. The plurality of nozzles are provided with a plurality of nozzles, each of which is provided with a plurality of nozzles. DETAILED DESCRIPTION

[0048] The technical solution of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present application.

[0049] The present application embodiment discloses a high tower melt granulation compound fertilizer production device. Figure 1 and Figure 2The compound fertilizer production device includes a bracket, a drying tower body 100, a mixing box 200, a receiving screen 300 and a nozzle plate 110. The bracket is erected in the factory area, the drying tower body 100 is erected on the bracket and fixedly connected to the bracket, and the end of the drying tower body 100 close to the ground is set in a cone shape. The mixing box 200 is fixedly connected to the bracket and erected on the side of the drying tower body 100 away from the ground, and the mixing box 200 is connected to the drying tower body 100. The nozzle plate 110 is fixedly connected to the side of the mixing box 200 close to the ground, and a plurality of nozzles 111 are arranged on the nozzle plate 110, and the plurality of nozzles 111 are divided into a plurality of groups, each group of nozzles 111 is arranged in a ring shape, and the plurality of groups of nozzles 111 are arranged in sequence in a direction away from the center line of the nozzle plate 110. The receiving screen 300 is located on the side of the drying tower body 100 away from the mixing box 200 close to the ground to receive the dried compound fertilizer.

[0050] Two air inlets are provided on the side wall of the drying tower body 100, and the two air inlets are arranged in sequence along the direction close to the ground. The air inlet close to the ground is located at the cone of the drying tower body 100, and the air inlet is the second air inlet 150. The extension direction of the second air inlet 150 is tangent to the side wall of the drying tower body 100, so that the wind entering the second air inlet 150 can drive the dust and particles in the drying tower body 100 to move in the direction close to the side wall of the drying tower body 100, and then the dust and particles can fall along the inner wall of the drying tower body 100 onto the receiving screen 300 to reduce the generation of dust. The air inlet far from the ground is the first air inlet 140, and the extension direction of the first air inlet 140 is perpendicular to the length direction of the drying tower body 100.

[0051] Reference Figure 2 and Figure 3 The compound fertilizer production device also includes a cleaning component 400, which includes a frame 410, a cleaning brush 420 and a buoyancy cloth 430. The frame 410 includes a ring frame 411 and a plurality of rotating plates 412. The ring frame 411 is arranged in a ring shape, and bristles are detachably connected to the outer peripheral wall of the ring frame 411 to clean the inner wall of the drying tower body 100. In this embodiment, the bristles are connected to the ring frame 411 through Velcro, the needle surface of the Velcro is fixedly connected to the side wall of the ring frame 411, and the bristles are fixedly connected to the hair surface of the Velcro. The ring frame 411 is divided into two semi-rings, the two semi-rings are rotatably connected, and a locking member 413 for locking the rotation angle of the two semi-ring frames 411 is provided on the semi-ring. Two locking members 413 are provided, and the two locking members 413 are respectively provided at the two ends of one of the semi-rings. The locking member 413 is a locking rod, which is slidably connected to one of the half ring frames 411, and a locking groove that is plugged and matched with the locking rod is provided on the other half ring.

[0052] There are multiple cleaning brushes 420 , and the cleaning brushes 420 are arranged in a one-to-one correspondence with the nozzles 111 . The multiple cleaning brushes 420 are divided into multiple groups. Each group of cleaning brushes 420 is arranged in correspondence with a rotating plate 412 and is fixedly connected to the corresponding rotating plate 412 .

[0053] The plurality of rotating plates 412 are evenly arranged along the circumference of the ring frame 411, and each of the plurality of rotating plates 412 is rotatably connected to the ring frame 411 at one end, and the other end rotates in a direction close to or away from the center line of the ring frame 411. The ring frame 411 is provided with an adjustment component 500 for adjusting the rotation angle of the rotating plate 412. The buoyancy cloth 430 is provided in plurality, and the plurality of buoyancy cloths 430 are arranged between adjacent rotating plates 412, and both sides of the buoyancy cloth 430 are fixedly connected to the rotating plates 412 on the corresponding sides.

[0054] The staff puts the cleaning assembly 400 into the drying tower body 100. After the gas enters from the air inlet of the drying tower body 100, the buoyancy cloth 430 is in an open state under the action of the rotating plate 412, so that the buoyancy cloth 430 can drive the frame 410 to move toward the direction close to the nozzle under the action of the gas. When the frame 410 moves to a certain position, the cleaning brush 420 can be plugged and matched with the nozzle of the corresponding nozzle 111, so as to dredge the blocked nozzle 111. When the production device is running, the staff controls the adjustment assembly 500 to rotate the free end of the rotating plate 412 in a direction away from the center line of the frame 410, so that the buoyancy cloth 430 is retracted, and the cleaning assembly 400 is not easy to interfere with the operation of the production device.

[0055] In order to prevent the ring frame 411 from rotating in the drying tower body 100 , a limiting groove 414 is provided on the outer peripheral wall of the ring frame 411 , and a limiting block engaging with the limiting groove 414 is fixedly connected in the drying tower body 100 .

[0056] In order to reduce the friction between the ring frame 411 and the drying tower body 100 when the ring frame moves and to prevent the ring frame from shaking, a plurality of balls are rollingly connected to the side wall of the ring frame 411, and the balls are in contact with the side wall of the drying tower body 100.

[0057] The adjustment assembly 500 includes an adjustment ring 510, an adjustment magnet 520 and a plurality of adjustment torsion springs, wherein the adjustment torsion springs correspond to the rotating plate 412 one by one, and one end of the adjustment torsion springs is connected to the rotating plate 412, and the other end is connected to the ring frame 411. Under the elastic force of the adjustment torsion springs, the free end of the rotating plate 412 is located near the center line of the ring frame 411. The adjustment ring 510 is sleeved on the outside of the plurality of nozzles 111, and a plurality of adjustment blocks 511 are fixedly connected to the outer peripheral wall of the adjustment ring 510, and the plurality of adjustment blocks 511 are uniformly arranged along the circumference of the adjustment ring 510, and a ball is rollingly connected to the side of the adjustment block 511 away from the adjustment ring 510, and the ball can contact the inner wall of the drying tower body 100. The adjustment magnet 520 is located outside the drying tower body 100, and the adjustment magnet 520 can move along the length direction of the drying tower body 100 and is magnetically connected to the adjustment ring 510. The drying tower body 100 is provided with a moving assembly 530 for driving the adjusting magnet 520 to move.

[0058] The moving assembly 530 includes a moving motor 531, a moving block 535, a moving lead screw 532, a moving rod 533 and a positioning block 534. The moving motor 531 is fixedly connected to the side wall of the drying tower body 100. The moving lead screw 532 is arranged along the length direction of the drying tower body 100, and the moving lead screw 532 is rotatably connected to the side wall of the drying tower body 100, and is coaxially fixedly connected to the output shaft of the moving motor 531. The moving rod 533 is arranged parallel to the moving lead screw 532 and is fixedly connected to the drying tower body 100. The moving block 535 is threadedly connected to the moving lead screw 532, and a hole for the moving rod 533 to pass through is provided on the moving block 535 to realize the sliding connection between the moving block 535 and the moving rod 533. The adjusting magnet 520 is sleeved on the outside of the moving screw 532 and the moving rod 533. The positioning block 534 is fixedly connected to the drying tower body 100 and is located on the moving track of the adjusting magnet 520. The adjusting magnet 520 is located on the side of the positioning block 534 and the moving block 535 facing away from the ground, so that when the moving screw 532 rotates to drive the moving block 535 to move, it can push the adjusting magnet 520 to move.

[0059] The drying tower body 100 is provided with a connecting magnet 120, which is magnetically connected to the ring frame 411. The moving block 535 is provided with a slide groove in the direction close to or away from the side wall of the drying tower body 100. The connecting magnet 120 is connected to the bottom of the slide groove through a connecting spring, and under the elastic force of the connecting spring, the connecting magnet is located in the slide groove. The connecting magnet 120 is provided with a clearance groove for the positioning block 534 to pass through, so that the positioning block 534 is not easy to interfere with the movement of the connecting magnet 120, and the side of the connecting magnet 120 close to the ground is coated with color.

[0060] The size of the drying tower body 100 is larger than that of the nozzle plate 110 , so that a receiving groove 160 for receiving the adjusting ring 510 and the cleaning assembly 400 is formed on the periphery of the nozzle plate 110 .

[0061] When the cleaning component 400 moves the ring frame 411 toward the nozzle plate 110 to align with the connecting magnet 120, the connecting magnet 120 slides to a position in contact with the side wall of the drying tower body 100. At this time, the connecting spring is stretched, and the staff can see the color of the connecting magnet 120 close to the ground, thereby judging the position of the cleaning component 400, so that the staff can adjust the wind force in the drying tower body 100. When the cleaning component 400 is moved into position, the moving motor 531 is started so that the moving screw 532 drives the moving block 535 to move the cleaning component 400 away from the ground under the action of wind force and the connecting magnet 120. When the cleaning component 400 moves to the point where the rotating plate 412 contacts the adjusting ring 510, the rotating plate 412 rotates under the action of the adjusting ring 510, thereby making it difficult for the cleaning component 400 to contact the nozzle 111. The moving motor 531 continues to run to collect the cleaning component 400 and the adjusting ring 510 into the accommodating groove 160. At this time, the adjusting ring 510 contacts the bottom of the accommodating groove 160. When the staff needs to clean the nozzle 111, the moving motor 531 is started to move the cleaning component 400 to a position where it is separated from the connecting magnet 120, and then the moving motor 531 is controlled to rotate in the opposite direction, so that the moving block 535 drives the adjusting magnet 520 to move the adjusting ring 510 into the receiving groove 160. At this time, the adjusting ring 510 is spaced apart from the bottom of the receiving groove 160, and the spacing can be determined by setting a circle counter to adjust the number of circles of the moving motor 531. Then the air volume is controlled to allow the cleaning component 400 to clean the nozzle 111. After the cleaning component 400 is inserted into the nozzle 111, the cleaning component 400 is aligned with the connecting magnet 120 again, and the connecting magnet 120 slides out of the slide slot, thereby prompting the staff that the cleaning component 400 has been cleaned. At this time, the moving motor 531 is started to drive the moving block 535 to move toward the direction close to the ground, so that the cleaning component 400 and the nozzle 111 can be separated.

[0062] In order to facilitate the alignment of the cleaning brush 420 with the corresponding nozzle 111, a plurality of guide sleeves 415 are fixedly connected to the rotating plate 412. Along the direction perpendicular to the rotating plate 412, the guide sleeve 415 is larger than the cleaning brush 420, and the guide sleeve 415 corresponds to the cleaning brush 420 one by one and is sleeved on the outside of the corresponding cleaning brush 420. The guide sleeve 415 can be sleeved on the outside of the nozzle 111 corresponding to the cleaning brush 420, and in order to facilitate the guide sleeve 415 to be sleeved on the outside of the nozzle 111, the end of the guide sleeve 415 facing away from the rotating plate 412 is set to be trumpet-shaped.

[0063] In order to facilitate the staff to clean the cleaning component 400, an inspection port 130 is opened on the side wall of the drying tower body 100, and a door body for opening and closing the inspection port 130 is rotatably connected to the side wall of the drying tower body 100, and the free end of the door body is connected to the side wall of the drying tower body 100 by bolts, so that the door body is not easily opened by the wind force inside the drying tower body 100.

[0064] Based on the above production device, the present application also proposes a high-tower melt granulation compound fertilizer production process, comprising the following steps:

[0065] S1, transporting each material to a mixing box 200 and mixing them evenly to obtain a mixture;

[0066] S2, after the mixture is sprayed out by the nozzle 111 on the nozzle plate 110, it meets the gas in the drying tower body 100 and is dried to obtain particles;

[0067] S3. After passing through the drying tower body 100, the granules fall into the receiving screen 300 for screening to obtain compound fertilizer.

[0068] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high tower melt granulation compound fertilizer production device, characterized in that: include: A drying tower body (100) is provided with an air inlet on its side wall; A mixing box (200) is used for mixing materials, and the mixing box (200) is mounted on a side of the drying tower body (100) facing away from the ground, and the mixing box (200) is in communication with the drying tower body (100); A receiving screen (300) is used for screening the fertilizer particles, and the receiving screen (300) is located on a side of the drying tower body (100) away from the mixing box (200) to receive the dried fertilizer particles; A nozzle plate (110) is located on a side of the mixing box (200) close to the ground and connected to the mixing box (200), and a plurality of nozzles (111) are provided on the nozzle plate (110) to granulate the mixed material; A cleaning assembly (400) comprising: The frame (410) is located in the drying tower body (100) and is movable along the length direction of the drying tower body (100); A plurality of cleaning brushes (420) are provided, the plurality of cleaning brushes (420) corresponding one to one with the nozzle (111), and the cleaning brushes (420) can be plugged into and matched with the nozzle of the nozzle (111); The buoyancy fabric (430) is connected to the frame (410); The frame (410) comprises: A ring frame (411) in the shape of a ring; A plurality of rotating plates (412) are provided, each of the plurality of rotating plates (412) is rotatably connected to the ring frame (411) at one end, and the other end rotates toward or away from the center line of the ring frame (411); a plurality of cleaning brushes (420) are divided into a plurality of groups, and a group of cleaning brushes (420) corresponds to a rotating plate (412) and is connected to the rotating plate (412); a plurality of buoyancy cloths (430) are provided, and the plurality of buoyancy cloths (430) are arranged along the circumference of the ring frame (411), and both sides of the buoyancy cloths (430) are connected to a rotating plate (412); The drying tower body (100) is provided with an adjustment component (500) for adjusting the rotation angle of the rotating plate (412); When the buoyancy cloth (430) is in an open state under the action of the rotating plate (412), the buoyancy cloth (430) can drive the frame (410) to move in a direction close to the nozzle (111) under the action of the gas, and when the frame (410) moves to a certain position, the cleaning brush (420) can be plugged into and matched with the nozzle of the corresponding nozzle (111); when the production device is running, the adjustment component (500) is controlled to rotate the free end of the rotating plate (412) in a direction away from the center line of the frame (410), and the buoyancy cloth (430) can be retracted.

2. A high tower melt granulation compound fertilizer production device according to claim 1, characterized in that: The adjustment component (500) comprises: An adjustment ring (510) is sleeved on the outside of the plurality of nozzles (111) and is capable of moving along the length direction of the drying tower body (100), and the adjustment ring (510) is capable of abutting against the rotating plate (412); An adjusting magnet (520) is located outside the drying tower body (100) and is magnetically connected to the adjusting ring (510); An adjusting torsion spring is used to connect the rotating plate (412) and the ring frame (411), and under the elastic force of the adjusting torsion spring, the free end of the rotating plate (412) rotates to a position close to the center line of the ring frame (411); The drying tower body (100) is provided with a moving component (530) for driving the adjustment magnet (520) to move.

3. A high tower melt granulation compound fertilizer production device according to claim 2, characterized in that: A connecting magnet (120) is provided on the drying tower body (100), the connecting magnet (120) is magnetically connected to the ring frame (411), and the connecting magnet (120) is connected to the drying tower body (100) via a moving component (530) so that the connecting magnet (120) can move in a direction close to or away from the ground.

4. A high tower melt granulation compound fertilizer production device according to claim 3, characterized in that: The moving component (530) comprises: A mobile motor (531) fixedly connected to a side wall of the drying tower body (100); MoveBlock(535); The movable lead screw (532) is rotatably connected to the side wall of the drying tower body (100) and is coaxially fixedly connected to the output shaft of the movable motor (531); the connecting magnet (120) is connected to the movable block (535); the movable block (535) is threadedly connected to the movable lead screw (532); and the adjusting magnet (520) is located on a side of the movable block (535) facing away from the ground and is sleeved on the outside of the movable lead screw (532); The moving rod (533) is fixedly connected to the side wall of the drying tower body (100), and the connecting magnet (120) is slidably connected to the moving rod (533). The positioning block (534) is fixedly connected to the side wall of the drying tower body (100), and the positioning block (534) is located on the moving track of the adjusting magnet (520).

5. A high tower melt granulation compound fertilizer production device according to claim 4, characterized in that: An inspection port (130) is provided on the side wall of the drying tower body (100); the frame body (410) is ring-shaped and is divided into two rotatably connected half rings, one of the half rings being provided with a locking member (413) for locking the rotation angle of the two half rings.

6. A high tower melt granulation compound fertilizer production device according to claim 5, characterized in that: Brush bristles are arranged on the side walls of the frame (410).

7. A high tower melt granulation compound fertilizer production device according to claim 1, characterized in that: One end of the drying tower body (100) close to the ground is arranged in a cone shape, and two air inlets are arranged, and the two air inlets are arranged in sequence along a direction close to the ground, wherein the air inlet close to the ground is located in the cone shape of the drying tower body (100), and the opening direction of the air inlet is arranged tangent to the side wall of the drying tower body (100).

8. A high tower melt granulation compound fertilizer production process, characterized in that: The high tower melt granulation compound fertilizer production device according to any one of claims 1 to 7 is used to prepare compound fertilizer, which comprises the following steps: S1, transporting each material to a mixing box (200) and mixing them evenly to obtain a mixture; S2, after the mixture is sprayed out through the nozzle (111) on the nozzle plate (110), it meets the gas in the drying tower body (100) and is dried to obtain particles; S3. The granules pass through the drying tower body (100) and fall into the receiving screen (300) for screening to obtain compound fertilizer.

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