Anti-caking device for nitro-compound fertilizer production

Abstract

The utility model relates to the technical field of nitro-compound fertilizer production devices, in particular to an anti-caking device for nitro-compound fertilizer production, which comprises a feeding barrel, the bottom of the feeding barrel is communicated with an air inlet barrel, and the bottom of the air inlet barrel is communicated with a material dispersing barrel through a material distributing barrel; a material pushing piston is arranged in the feeding cylinder, and a feeding opening is formed in the side wall of the feeding cylinder; an air inlet is formed in the lower portion of the air inlet barrel, an air outlet is formed in the upper portion of the air inlet barrel, a plurality of baffles are arranged in the air inlet barrel in an up-down staggered mode, a storage chamber is arranged at the bottom of the air inlet barrel, the bottom of the storage chamber is connected with the material distribution barrel through a gate valve, and partition plates are arranged in the material distribution barrel and divide an inner cavity of the material distribution barrel into a plurality of material channels. A stirring mechanism is arranged in the material dispersing barrel, a screen is arranged below the stirring mechanism, a material pressing rod is arranged on the upper portion of the screen and is parallel to the screen, and the two ends of the material pressing rod are rotationally connected with the material dispersing barrel. The water content of materials is reduced through blowing, so that the materials are not easy to cake, then the materials are stirred and sieved, the materials are further scattered, and the materials are effectively prevented from caking.

Description

Technical Field

[0001] The utility model relates to the technical field of nitro compound fertilizer production devices, in particular to an anti-caking device for nitro compound fertilizer production. Background Art

[0002] Nitro compound fertilizer is a high-concentration compound fertilizer of N, P and K produced by using ammonium nitrate as nitrogen source and adding compound fertilizer raw materials such as phosphorus and potassium. There are three main production methods of nitro compound fertilizer: solid granulation method, partial slurry method and melt granulation method. Among them, melt granulation method is the most widely used. This method uses molten ammonium nitrate to add compound fertilizer raw materials such as ammonium phosphate, potassium sulfate, potassium chloride and explosion-proof additives to form a mixed melt, and agglomerates into granules while cooling during the granulation process. Since nitro compound fertilizer carries water itself, including water in the raw materials, such as ammonium nitrate, ammonium phosphate, potassium sulfate and other raw materials all contain a certain amount of water. In addition, crystal water is formed when chemical reactions occur between the components of nitro compound fertilizer, which leads to an increase in the water content in the product. During the granulation process, although most of the water is taken away by the air, some remains. During the production process of nitro compound fertilizer particles, temperature changes will affect their crystal transformation. Ammonium nitrate is an important component of nitro compound fertilizer. It has multiple crystal forms at different temperatures. The crystal transformation process is often accompanied by changes in volume, energy, structure, density and other properties, which may lead to closer contact between particles and provide conditions for the occurrence of particle adhesion and agglomeration. Especially in the process of rapid cooling, the crystal structure may jump directly from the high-temperature crystal form to the low-temperature crystal form. The more times the crystal form changes, the more serious the agglomeration phenomenon. The agglomeration of nitro compound fertilizer affects the quality and stability of the product, and it is not easy to spread evenly during use, resulting in excessive or low local dosage, affecting the fertilization effect and crop yield.

[0003] China Utility Model Authorization Announcement No. CN220696949U discloses a nitro-compound fertilizer anti-caking device, including a tank body, a mounting seat fixedly installed on the side of the tank body, a bracket fixedly installed on the side of the mounting seat, and a stirring chamber opened inside the tank body. The nitro-compound fertilizer anti-caking device, the output shaft of the driving motor one drives the stirring rod one and the stirring rod two to rotate through the rotating shaft, the side of the stirring rod one is arc-shaped, and can contact the inner wall of the stirring chamber during stirring, and can scrape the compound fertilizer on the inner wall to make it enter between the stirring rod one and the stirring rod two. After the dispersion is completed, the output shaft of the driving motor two drives the turntable to rotate through the rotating shaft two, and the compound fertilizer enters the discharge port, and the output shaft of the driving motor three drives the stirring rod three to rotate through the rotating shaft three to prevent the compound fertilizer from being blocked at the discharge port during discharge, and the tank body is also filled with sound insulation material to reduce the noise pollution generated when the device is working. In the use of the prior art, since the moisture in the material cannot be discharged, even if the stirring rods 1 and 2 break up the material, lumps will form at the discharge port, and the anti-lumping effect is not ideal. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide an anti-caking device for producing nitro compound fertilizer, which reduces the water content of materials by blowing air so that the materials are not easy to agglomerate, and then stirs and sieves to further break up the materials, thereby effectively preventing agglomeration.

[0005] The utility model discloses an anti-caking device for producing nitro compound fertilizer, comprising a feed cylinder, the bottom of which is connected to an air inlet cylinder, and the bottom of which is connected to a bulk material cylinder through a distributor cylinder; a push piston is arranged in the feed cylinder, and a feed port is arranged on a side wall of the feed cylinder; an air inlet is arranged at the lower part of the air inlet cylinder, an air outlet is arranged at the upper part of the air inlet cylinder, a plurality of baffles are arranged inside the air inlet cylinder, the baffles are higher in the middle, and the left and right sides are inclined surfaces, the front and rear ends of the baffles are respectively connected to the front and rear side walls of the air inlet cylinder, the left and right sides of the baffles are not connected to the left and right side walls of the air inlet cylinder, the baffles are staggered up and down, a storage chamber is arranged at the bottom of the air inlet cylinder, the storage chamber is located at the lower part of the air inlet, and the bottom of the storage chamber is connected to the distributor cylinder through a gate valve A cylinder is provided with a partition plate inside the distribution cylinder, which divides the inner cavity of the distribution cylinder into several material channels, and the upper and lower ends of the material channels are connected to the storage chamber and the bulk cylinder respectively; a stirring mechanism is provided inside the bulk cylinder, and the stirring mechanism includes a horizontally arranged rotating shaft, on which a stirring rod is arranged, one end of the rotating shaft passes through the wall of the bulk cylinder and is connected to an output end of a motor, a screen is provided below the stirring mechanism, a pressing rod is provided above the screen, the pressing rod is arranged parallel to the screen, both ends of the pressing rod are rotatably connected to the bulk cylinder, one end of the pressing rod passes through the wall of the bulk cylinder and is connected to a second output end of the motor, the cross-section of the pressing rod is elliptical, and when the pressing rod rotates until the major axis is vertical, the bottom of the pressing rod contacts the screen.

[0006] Preferably, a push rod is provided on the top of the pushing piston, and the push rod is connected to the piston rod of the hydraulic lever.

[0007] Preferably, a feed hopper is provided on the feed inlet.

[0008] Preferably, the air inlet is provided with an air guide tube arranged obliquely upward, which can prevent the material from leaking out of the air guide tube. The air inlet is connected to a hair dryer, which reduces the water content of the material by blowing air into the air inlet tube, making the material less likely to clump.

[0009] Preferably, a filter is provided on the air outlet, and the filter intercepts the material in the outlet air to prevent the material from leaking into the air.

[0010] Preferably, stirring teeth are fixed on the inner wall of the bulk material barrel corresponding to the stirring mechanism, the stirring teeth are cylindrical, and the stirring teeth and the stirring rods are interlaced and staggered, which further improves the effect of breaking up the materials.

[0011] Preferably, a discharge port is provided at the bottom of the bulk material barrel.

[0012] Preferably, an air hammer is provided on the outer wall of the air inlet cylinder, and the air hammer strikes the outer wall of the air inlet cylinder to make the materials adhering to the inner wall of the air inlet cylinder fall down.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the material falls in the air inlet, it is dispersed by the baffle. The air at the air inlet takes out the moisture in the material and is discharged from the air outlet. The material falls into the storage chamber after the moisture content is reduced in the air inlet.

[0015] 2. The material falls from the storage chamber into the bulk barrel through the distribution barrel. Several feeding channels in the distribution barrel disperse the material, making it more evenly enter the bulk barrel. The material enters the bulk barrel and is broken up by the stirring rod of the stirring mechanism and then falls onto the screen. The pressing rod rotates to crush the material that has not fallen on the screen and then passes through the screen. At the same time, when the pressing rod rotates and contacts the screen, the screen vibrates, making the material spread more evenly and accelerating the material passing through the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model nitro compound fertilizer production anti-caking device;

[0017] Figure 2 It is a schematic diagram of the structure of the air inlet cylinder, the material distribution cylinder and the bulk cylinder;

[0018] Figure 3 It is the internal cross-sectional view of the air inlet cylinder, the material distribution cylinder and the bulk cylinder;

[0019] Figure 4 It is a longitudinal sectional view of the bulk barrel;

[0020] In the figure: 1. Feed barrel; 2. Air inlet barrel; 3. Distributor barrel; 4. Bulk barrel; 5. Push piston; 6. Feed port; 7. Air inlet; 8. Air outlet; 9. Baffle; 10. Storage chamber; 11. Gate valve; 12. Partition plate; 13. Material channel; 14. Rotating shaft; 15. Stirring rod; 16. Motor 1; 17. Screen; 18. Pressing rod; 19. Motor 2; 20. Push rod; 21. Feed hopper; 22. Filter; 23. Stirring teeth; 24. Discharge port; 25. Air hammer; 26. Air guide barrel. DETAILED DESCRIPTION

[0021] The present invention will be described clearly and completely below with reference to the accompanying drawings.

[0022] Example 1

[0023] like Figure 1 , Figure 2As shown, the anti-caking device for producing nitro compound fertilizer comprises a feed barrel 1, the bottom of the feed barrel 1 is connected to the air inlet barrel 2, and the bottom of the air inlet barrel 2 is connected to the bulk barrel 4 through the distributor barrel 3; a push piston 5 is arranged in the feed barrel 1, and a feed port 6 is arranged on the side wall of the feed barrel 1; an air inlet 7 is arranged at the lower part of the air inlet barrel 2, an air outlet 8 is arranged at the upper part of the air inlet barrel 2, and a plurality of baffles 9 are arranged inside the air inlet barrel 2, the baffle 9 is higher in the middle, and the left and right sides are inclined surfaces, the front and rear ends of the baffle 9 are respectively connected to the front and rear side walls of the air inlet barrel 2, and the left and right sides of the baffle 9 are not connected to the left and right side walls of the air inlet barrel 2, the baffles 9 are staggered up and down, a storage chamber 10 is arranged at the bottom of the air inlet barrel 2, the storage chamber 10 is located at the lower part of the air inlet 7, and the bottom of the storage chamber 10 is connected to the distributor barrel 3 through a gate valve 11, as shown in FIG. Figure 3 As shown, a partition plate 12 is provided inside the material distribution barrel 3, and the partition plate 12 divides the inner cavity of the material distribution barrel 3 into a plurality of material channels 13, and the upper and lower ends of the material channels 13 are connected to the storage chamber 10 and the bulk barrel 4 respectively; Figure 3 , Figure 4 As shown, a stirring mechanism is provided inside the bulk material barrel 4, and the stirring mechanism includes a transversely arranged rotating shaft 14, on which a stirring rod 15 is provided, one end of the rotating shaft 14 passes through the wall of the bulk material barrel 4 to be connected to the output end of a motor 16, a screen 17 is provided below the stirring mechanism, a pressing rod 18 is provided on the upper part of the screen 17, the pressing rod 18 is arranged parallel to the screen 17, both ends of the pressing rod 18 are rotatably connected to the bulk material barrel 4, one end of the pressing rod 18 passes through the wall of the bulk material barrel 4 to be connected to the output end of a motor 2 19, the cross-section of the pressing rod 18 is elliptical, and when the pressing rod 18 rotates until the major axis is vertical, the bottom of the pressing rod 18 contacts the screen 17.

[0024] like Figure 1 As shown, a push rod 20 is provided on the top of the push piston 5, and the push rod 20 is connected to the piston rod of the hydraulic lever. A feed hopper 21 is provided on the feed port 6. An air guide 26 is provided on the air inlet 7, which is obliquely arranged upward, and the air inlet 7 is connected to a hair dryer. A filter screen 22 is provided on the air outlet 8. A discharge port 24 is provided at the bottom of the bulk barrel 4.

[0025] like Figure 4 As shown, stirring teeth 23 are fixed on the inner wall of the bulk material barrel 4 corresponding to the stirring mechanism. The stirring teeth 23 are cylindrical, and the stirring teeth 23 and the stirring rods 15 are interlaced and arranged.

[0026] The working process is as follows: the nitro compound fertilizer material enters the feed barrel 1 from the feed hopper 21, and the hydraulic cylinder is started to push the push rod 20 to push the push piston 5 downward, thus preventing the material from sticking to the wall of the feed barrel 1. The material enters the air inlet cylinder 2 and falls on the baffle 9. After being scattered by the baffle 9, it continues to fall from both sides of the baffle 9. The blower blows air into the air inlet cylinder 2 through the air inlet 7. While the material falls, the moisture contained in it is carried to the air outlet 8 by the wind and is filtered by the filter 22 before being discharged. The material entering the air inlet tube 2 falls into the storage chamber 10. When the material accumulates to a certain amount, the gate valve 11 is opened, and the material falls into the bulk barrel 4 through the material channel 13 under the separation of the partition plate 12. The rotating shaft 14 rotates under the drive of the motor 16 and cooperates with the stirring teeth 23 to break up the material. The broken material falls onto the screen 17. The motor 2 19 drives the pressing rod 18 to rotate, and the material that remains on the screen 17 and has not fallen down is crushed and passes through the screen 17. At the same time, when the pressing rod 18 rotates to contact the screen 17, the screen 17 vibrates, so that the material is spread more evenly and the material passes through the screen 17 faster.

[0027] Example 2

[0028] On the basis of Example 1, Figure 1 As shown, an air hammer 25 is provided on the outer wall of the air inlet cylinder 2, and the air hammer 25 can be used to knock the outer wall of the air inlet cylinder 2 to make the materials adhered to the inner wall of the air inlet cylinder 2 fall down.

Claims

1. A nitro compound fertilizer production anti-caking device, characterized in that: The invention comprises a feed cylinder (1), the bottom of the feed cylinder (1) is connected to an air inlet cylinder (2), and the bottom of the air inlet cylinder (2) is connected to a bulk material cylinder (4) through a material distribution cylinder (3); a material pushing piston (5) is arranged in the feed cylinder (1), and a material feeding port (6) is arranged on the side wall of the feed cylinder (1); an air inlet port (7) is arranged at the lower part of the air inlet cylinder (2), an air outlet port (8) is arranged at the upper part of the air inlet cylinder (2), and a plurality of baffles (9) are arranged inside the air inlet cylinder (2), the baffles (9) are higher in the middle, and the left and right sides are lower. The side is an inclined surface, the front and rear ends of the baffle (9) are respectively connected to the front and rear side walls of the air inlet cylinder (2), the left and right sides of the baffle (9) are not connected to the left and right side walls of the air inlet cylinder (2), the baffles (9) are arranged in an upper and lower staggered manner, the bottom of the air inlet cylinder (2) is provided with a storage chamber (10), the storage chamber (10) is located at the lower part of the air inlet port (7), the bottom of the storage chamber (10) is connected to the material distribution cylinder (3) through a gate valve (11), the inside of the material distribution cylinder (3) is provided with a partition plate (12), the partition plate (12) divides the inner cavity of the material distribution cylinder (3) into a plurality of material channels (13), the upper and lower ends of the material channels (13) are respectively connected to the storage chamber (10) and the bulk material cylinder (4); the bulk material cylinder (4) is provided with a stirring mechanism, the stirring mechanism comprises a horizontally arranged rotating shaft (14), the rotating shaft (14) is provided with a stirring rod (15), one end of the rotating shaft (14) passes through the wall of the bulk material cylinder (4) and is connected to the output end of a motor (16), and a screen is provided below the stirring mechanism A mesh (17) is provided with a pressing rod (18) on the upper part of the mesh (17). The pressing rod (18) is arranged parallel to the mesh (17). Both ends of the pressing rod (18) are rotatably connected to the bulk material barrel (4). One end of the pressing rod (18) passes through the wall of the bulk material barrel (4) and is connected to the output end of the second motor (19). The cross section of the pressing rod (18) is elliptical. When the pressing rod (18) is rotated to a state where the major axis is vertical, the bottom of the pressing rod (18) contacts the mesh (17).

2. The anti-caking device for producing nitro-compound fertilizer according to claim 1, characterized in that: A push rod (20) is provided on the top of the pushing piston (5), and the push rod (20) is connected to the piston rod of the hydraulic lever.

3. The anti-caking device for producing nitro-compound fertilizer according to claim 1, characterized in that: A feed hopper (21) is provided on the feed inlet (6).

4. The anti-caking device for producing nitro-compound fertilizer according to claim 1, characterized in that: An air guide tube (26) disposed obliquely upward is provided on the air inlet (7), and the air inlet (7) is connected to a hair dryer.

5. The anti-caking device for producing nitro-compound fertilizer according to claim 1, characterized in that: A filter screen (22) is provided on the air outlet (8).

6. The anti-caking device for producing nitro-compound fertilizer according to claim 1, characterized in that: A stirring tooth (23) is fixed on the inner wall of the bulk material barrel (4) corresponding to the stirring mechanism. The stirring tooth (23) is cylindrical, and the stirring tooth (23) and the stirring rod (15) are interlaced and arranged.

7. The anti-caking device for producing nitro-compound fertilizer according to claim 1, characterized in that: The bulk material barrel (4) is provided with a discharge port (24) at the bottom.

8. The anti-caking device for producing nitro-compound fertilizer according to claim 1, characterized in that: An air hammer (25) is provided on the outer side wall of the air inlet cylinder (2).

Images