Automatic environment-friendly granulation equipment for green fertilizer production

Abstract

The invention discloses automatic environment-friendly granulation equipment for green fertilizer production, and relates to the technical field of fertilizer granulation, an adjusting pipe and an adjusting rod are connected through a protective gas box, a plurality of material blocking rings are connected between two supporting rods in a penetrating mode, a transverse plate is connected between the material blocking rings, and the transverse plate is connected between the two supporting rods. Supporting openings are formed in the two ends of the transverse plate, the supporting rods penetrate through the interiors of the corresponding supporting openings, a swinging opening is formed in the middle of the transverse plate, a U-shaped fork is fixedly connected into the swinging opening, swinging blocks are rotationally installed in the middle of the top of the material blocking circular ring, and a spraying pipe is rotationally connected between the swinging blocks through a bearing; the rotation angle of the material blocking circular ring is controlled by controlling the telescopic length of the output end of the adjusting cylinder, the rotation angle of the material blocking circular ring is flexibly controlled according to the forming characteristics of fertilizer raw materials, the rotation speed of each roller is flexibly controlled in a matched mode, the forming quality of fertilizer particles is guaranteed, and meanwhile the production speed of the fertilizer particles is higher.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fertilizer granulation, in particular to a green automatic environment-friendly fertilizer production granulation equipment. BACKGROUND

[0002] The drum granulator is a forming machine that can make materials into a specific shape. It is one of the key equipment in the inorganic fertilizer and green organic fertilizer industry. It is suitable for cold and hot granulation and large-scale production of high, medium and low concentration compound fertilizers. The main working method is wet granulation. A certain amount of water or steam is added to the inside of the drum granulator. The rotation of the cylinder makes the mixed raw materials agglomerate into balls to form fertilizer particles.

[0003] In the Chinese patent with application number CN202320400134.7 and the name "Drum granulation equipment", the patent can reduce the problem of raw material powder adhering to the inner wall of the drum during the granulation process, resulting in waste of raw materials and reduction of drum rotation efficiency; In order to ensure the forming quality of fertilizer particles, a partition baffle is often welded inside the drum to control the residence time of the material when using the drum granulator to process fertilizer particles. This makes the fertilizer particles better shaped. However, the existing partition baffle is fixed in position and cannot be flexibly adjusted in inclination angle according to the needs of fertilizers with different components, resulting in longer or shorter residence time of fertilizer particles in the drum, affecting the production speed of fertilizer particles. Increasing the drum speed to improve the discharge speed is easy to lead to insufficient agglomeration of fine powder, reduce the granulation rate, and the existing drum granulator needs to transfer the formed fertilizer particles to the inside of the dryer for drying. During the transfer process, the fertilizer particles are prone to breakage due to high moisture content, reducing the quality of finished products. SUMMARY

[0004] The present application provides a green automatic environment-friendly fertilizer production granulation equipment, which can effectively solve the problem of the fixed position of the partition baffle in the existing drum, which cannot be flexibly adjusted in inclination angle according to the needs of fertilizers with different components, resulting in longer or shorter residence time of fertilizer particles in the drum, affecting the production speed of fertilizer particles. Increasing the drum speed to improve the discharge speed is easy to lead to insufficient agglomeration of fine powder, reduce the granulation rate, and after the granulation of the existing drum granulator is completed, the fertilizer particles are prone to breakage during the transfer process due to high moisture content, reducing the quality of finished products.

[0005] To achieve the above purpose, the present application provides the following technical scheme: a green automatic environment-friendly fertilizer production granulation equipment, comprising a base, a fertilizer granulation assembly is arranged on the top of the base, and the fertilizer granulation assembly comprises a drum; The base top is rotationally connected with three rollers, support rods are installed on the inside of the rollers, sliding frames are installed at the two ends of the base, an adjusting pipe is slidably connected in one of the sliding frames, an adjusting rod is slidably connected in the other sliding frame, the adjusting pipe and the adjusting rod are connected through a protective gas box, and multiple lower spray heads are connected to the bottom of the adjusting pipe. A plurality of material blocking rings are connected between the two support rods, a horizontal plate is connected in the middle of the material blocking ring, support openings are formed at the two ends of the horizontal plate, the support rods penetrate through the inside of the corresponding support openings, an oscillating opening is formed in the middle of the horizontal plate, a U-shaped fork is fixedly connected in the oscillating opening, oscillating blocks are rotationally installed in the middle of the top of the material blocking ring, a spray pipe is rotationally connected between the oscillating blocks through a bearing, and multiple upper spray heads are connected to the bottom of the spray pipe.

[0006] According to the above technical scheme, the adjusting pipe is located in one roller, the adjusting rod is located in the other two rollers, the support rods are connected with support frames at the two ends, and the sliding frame is fixedly connected with the top of an adjacent support frame.

[0007] According to the above technical scheme, a plurality of embedded rods are welded at the top of the adjusting pipe and the adjusting rod, an adjusting cylinder is installed at one end of the adjusting pipe, the output end of the adjusting cylinder is connected with one end of the adjusting pipe, the embedded rods are movably embedded in the inside of an adjacent U-shaped fork, and a plurality of protective spray heads are connected to the outside of the protective gas box.

[0008] According to the above technical scheme, hoisting frames are installed at the top of the two ends of the base, the hoisting frames are rotationally connected between the bottom of the hoisting frame and the spray pipe, and a scraper is welded on the outside of the spray pipe and between adjacent two oscillating blocks.

[0009] According to the above technical scheme, an oscillating gear is connected to one end of the outside of the spray pipe, an oscillating rack is slidably connected to the top of the oscillating gear on one side of one of the hoisting frames, an oscillating cylinder is installed at the top of the oscillating rack, the output end of the oscillating cylinder is connected with one end of the oscillating rack, and one end of the spray pipe is connected to one end of the conveying pipe through a rotating joint.

[0010] According to the above technical scheme, the other end of the conveying pipe is connected to one end of the water control valve, the other end of the water control valve is connected with the water outlet end of the external water pump, one side of the conveying pipe is connected to one end of the gas control valve through the gas control valve, the other two ends of the gas control valve are respectively connected to one end of the heating cylinder and one end of the check valve, a gas conveying electric heating wire is installed in the inside of the heating cylinder, and the other end of the heating cylinder is connected with the gas outlet end of the external air pump.

[0011] According to the above technical solution, the other end of the check valve is connected to the top of the regulating pipe via a hose, the bottom of the conveying pipe is connected to one end of the water distribution valve, the other end of the water distribution valve is also connected to the top of the regulating pipe via a hose, and a separate control motor is installed on the top of the base and on one side of the roller.

[0012] According to the above technical solution, a material removal and discharge assembly is provided at one end of the base, and the material removal and discharge assembly includes a discharge box; A discharge box is installed at one end of the base and at the bottom of the adjacent roller. Two receiving membranes are installed on both sides inside the discharge box. Side plates are connected to both ends of the receiving membranes. Several triangular frames are connected between the two opposite side plates. The receiving membranes cover the outside of the triangular frames. A conveyor belt is installed at the bottom of the discharge box. A rotating shaft is rotatably mounted in the middle of the triangular frame. Cams are connected to both ends of the outer side of the rotating shaft. Fans are connected to both ends of the rotating shaft. Air collection hoods are connected to the opposite sides of the side plates. The fan is located inside the adjacent air collection hood. An air inlet pipe is connected to the middle of one side plate, and an air outlet pipe is connected to the middle of the other side plate. The air inlet pipe and the air outlet pipe are connected to each other inside the adjacent air collection hood. A heating box is installed on one side of the discharge box. A drying heating wire is installed inside the heating box. One side of the heating box is connected to one end of the air inlet pipe. An air pump is installed on one side of the heating box. The air outlet of the air pump is connected to the other side of the heating box.

[0013] According to the above technical solution, the receiving membranes are stacked in a crisscross pattern from top to bottom, and the gaps between the receiving membranes form bending cavities. Bending perforated plates are connected to both ends of the bending cavities on both sides of the discharge box. A collection box is connected to the outer side of one side of the bending perforated plate. A vacuum cleaner is installed on one side of the discharge box near the collection box. The bottom of the collection box is connected to the suction end of the vacuum cleaner through a dust exhaust pipe. One end of the vent pipe is connected to one end of the recovery pipe, and the other end of the recovery pipe is connected to a collection box. One side of the collection box is connected to one end of the distribution tee. Heating covers are sleeved on both ends of the outer side of the roller near the discharge box. The other two ends of the distribution tee are respectively connected to the bottom of the two heating covers. An exhaust pipe is connected to the top of the heating cover.

[0014] According to the above technical solution, the water control valve, air control valve and water distribution valve are all electrically controlled valves. The regulating cylinder, swing cylinder, water control valve, air control valve, air supply heating wire, water distribution valve, separate control motor, vacuum cleaner, drying heating wire, air supply pump and conveyor belt input end are electrically connected to the external power supply output end through the controller.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. Equipped with a fertilizer granulation component, the rotational speed of each roller is optimized to ensure the quality of fertilizer granule formation. Simultaneously, during fertilizer processing inside the rollers, the control cylinder adjusts the movement based on the composition of the raw material. The cylinder drives the adjustment pipe and rod, which in turn moves the embedded rod within the U-shaped fork. Under the limiting support of the spray pipe and support rod, the retaining ring rotates around the swing block. The rotation angle of the retaining ring is flexibly controlled according to the forming characteristics of the fertilizer raw material. The larger the rotation angle of the retaining ring, the larger the gap between the retaining ring and the roller, and the shorter the residence time of the fertilizer granules inside the roller. Conversely, the smaller the rotation angle, the longer the residence time. When the fertilizer raw material is easy to form, the rotation angle of the retaining ring is increased, allowing the formed granules to be quickly discharged from inside the roller. When the fertilizer raw material is difficult to form, the rotation angle of the retaining ring is decreased, allowing the fertilizer granules to be fully formed inside the roller. Combined with flexible control of the rotational speed of each roller, this ensures both the quality of fertilizer granule formation and a faster production speed. During processing, air is heated by the air supply heating wire and then enters the regulating pipe and protective air box. The hot air is sprayed out from the lower nozzle and the protective nozzle. The hot air sprayed from the lower nozzle, together with the rotation of the discharge cylinder, performs preliminary drying on the surface of the fertilizer granules. When the fertilizer granules are transferred later, the surface of the fertilizer granules is initially hardened, which enhances the impact resistance of the fertilizer granules, reduces granule damage, and improves the quality of fertilizer products. At the same time, the preliminary drying of fertilizer granules shortens the drying time of subsequent granules and improves the overall processing efficiency. In addition, the air sprayed from the protective nozzle forms an air wall at the connection between the forming cylinder and the discharge cylinder, preventing water mist inside the forming cylinder from entering the discharge cylinder and ensuring the stability of drying. During the water spraying process of the upper nozzle, the swing cylinder drives the spray pipe and the upper nozzle to rotate and swing, which increases the effective range of the upper nozzle, allowing the water to be fully mixed with the raw materials. The spray pipe plays a supporting role while improving the quality of granule forming. In addition, the swing of the spray pipe can make the scraper intermittently contact the inner wall of the drum, preventing the raw materials from sticking and accumulating on the inner wall of the drum, thus reducing subsequent cleaning costs.

[0016] 2. Equipped with a waste removal and discharge assembly, the fertilizer granules enter the discharge box after discharge and come into contact with the top receiving membrane. Under the action of gravity and the guidance of the receiving membrane, the fertilizer granules descend step by step inside the bending cavity and fall onto the bottom conveyor belt. The receiving membrane is made of high-temperature resistant flexible rubber, which can buffer the descent of the fertilizer granules and prevent them from breaking during the descent, thus protecting the fertilizer granules and improving the quality of the fertilizer product. At the same time, the air pump and heating box supply hot air into the receiving membrane. The hot air can further dry the fertilizer granules. Combined with the step-by-step descent, it further enhances the surface hardness of the granules, reducing granule damage during subsequent granule transfer and further improving the quality of the fertilizer product. As the fertilizer granules descend step by step inside the bending cavity, the dust particles mixed in with the fertilizer granules will follow the flowing air through the bending plate, bending cavity, collection box and dust exhaust pipe into the vacuum cleaner. The vacuum cleaner collects the dust, making the produced fertilizer granules more intact. The dust contained in the granules is collected during the granule transfer process, making the production more environmentally friendly. When hot air flows inside the receiving membrane, the hot air flowing through the air collecting hood will drive the fan, rotating shaft and cam to rotate, causing the rotating shaft to vibrate. Under the action of vibration transmission, the hot air flowing inside the receiving membrane will drive the receiving membrane to vibrate. Vibration can make the particles fall smoothly and ensure the stability of the discharge. At the same time, vibration can make the dust easier to be raised, improving the quality of impurity removal.

[0017] In summary, in the impurity removal and discharge assembly, after the hot air heats the feed film, it enters the heating hood through the recovery pipe, the collection box, and the distribution tee. The hot air inside the heating hood heats the discharge cylinder. Combined with the hot air sprayed from the lower nozzle in the fertilizer granulation assembly, the two assemblies work together to initially dry the fertilizer granules, making the surface of the fertilizer granules more uniformly dried. This ensures that the granules are fully protected during subsequent granule transfer. Attached Figure Description

[0018] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0019] In the attached diagram: Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the fertilizer granulation component of the present invention; Figure 3 This is a schematic diagram of the installation structure of the material-blocking ring of the present invention; Figure 4 This is a schematic diagram of the installation structure of the regulating tube of the present invention; Figure 5 This is a schematic diagram of the installation structure of the embedded rod of the present invention; Figure 6 This is a schematic diagram of the installation structure of the protective air box of the present invention; Figure 7 This is a schematic diagram of the mounting structure of the oscillating rack of the present invention; Figure 8 This is a schematic diagram of the structure of the impurity removal and discharge component of the present invention; Figure 9 This is a schematic diagram of the installation structure of the heating cover of the present invention; Figure 10 This is a schematic diagram of the installation structure of the heating box of the present invention; Figure 11This is a schematic diagram of the installation structure of the bent perforated plate of the present invention; Figure 12 This is a schematic diagram of the installation structure of the receiving membrane of the present invention; Figure 13 This is a schematic diagram of the installation structure of the fan of the present invention; Diagram label: 1. Base; 2. Fertilizer granulation assembly; 201. Roller; 202. Support rod; 203. Support frame; 204. Sliding frame; 205. Adjusting pipe; 206. Adjusting rod; 207. Embedded rod; 208. Adjusting cylinder; 209. Material stop ring; 210. Horizontal plate; 211. Support port; 212. Swing port; 213. U-shaped fork; 214. Swing block; 215. Bearing; 216. Lifting frame; 217. Spray pipe; 218. Upper spray head; 219. Scraper; 220. Oscillating gear; 221. Oscillating rack; 222. Oscillating cylinder; 223. Rotary joint; 224. Delivery pipe; 225. Water control valve; 226. Air control valve; 227. Air supply tee; 228. Heating cylinder; 229. Air supply heating wire; 230. Check valve; 231. Hose; 232. Water distribution valve; 233. Lower nozzle; 234. Protective air box; 235. Protective nozzle; 236. Sub-control motor; 3. Impurity removal and discharge assembly; 301. Discharge box; 302. Receiving membrane; 303. Side plate; 304. Air inlet pipe; 305. Air outlet pipe; 306. Bending chamber; 307. Bending perforated plate; 308. Collection box; 309. Dust exhaust pipe; 310. Vacuum cleaner; 311. Heating box; 312. Drying heating wire; 313. Air pump; 314. Recovery pipe; 315. Collection box; 316. Distribution tee; 317. Heating cover; 318. Exhaust pipe; 319. Triangular frame; 320. Rotating shaft; 321. Cam; 322. Fan; 323. Air collection cover; 324. Conveyor belt. Detailed Implementation

[0020] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0021] Example: Figures 1-13As shown, this invention provides a green, automated, and environmentally friendly granulation equipment for fertilizer production. It includes a base 1, with a fertilizer granulation component 2 mounted on top of the base 1. The fertilizer granulation component 2 includes a roller 201, a support rod 202, a support frame 203, a sliding frame 204, an adjusting pipe 205, an adjusting rod 206, an embedded rod 207, an adjusting cylinder 208, a material-blocking ring 209, a horizontal plate 210, a support opening 211, a swing opening 212, a U-shaped fork 213, and a swing block 214. 215, bearing; 216, hoisting frame; 217, nozzle; 218, upper nozzle; 219, scraper; 220, oscillating gear; 221, oscillating rack; 222, oscillating cylinder; 223, rotary joint; 224, delivery pipe; 225, water control valve; 226, air control valve; 227, air supply tee; 228, heating cylinder; 229, air supply heating wire; 230, check valve; 231, hose; 232, water distribution valve; 233, lower nozzle; 234, protective air box; 235, protective nozzle; and 236, separate control motor. Three rollers 201 are rotatably connected to the top of the base 1. A separate control motor 236 is installed on the top of the base 1, located on one side of each roller 201. Each motor corresponds to one roller 201 and can drive the corresponding roller 201 to rotate. Support rods 202 are installed on both sides inside the roller 201. Sliding frames 204 are installed at both ends of the base 1. An adjusting tube 205 is slidably connected inside one sliding frame 204, and an adjusting rod 206 is slidably connected in the middle of the other sliding frame 204. The adjusting tube 205 and the adjusting rod 206 are connected via a protective air box 234. Several protective nozzles 235 are connected to the outer side of the 34. The air sprayed by the protective nozzles 235 can form an air wall at the connection position of the two rollers 201. Support rods 202 are connected to support frames 203 at both ends. The sliding frame 204 is connected and fixed to the top of an adjacent support frame 203. Multiple lower nozzles 233 are connected to the bottom of the adjusting pipe 205. The adjusting pipe 205 is located inside one roller 201, and the adjusting rod 206 is located inside the other two rollers 201. The working range of the lower nozzles 233 is only inside the outer roller 201. The roller 201 corresponding to the lower nozzles 233 can dry and round the fertilizer granules, making the fertilizer granules more compact. Several retaining rings 209 are connected between two support rods 202. A horizontal plate 210 is connected in the middle of the retaining rings 209. Support ports 211 are opened at both ends of the horizontal plate 210. The support rods 202 pass through the corresponding support ports 211. A swing port 212 is opened in the middle of the horizontal plate 210. A U-shaped fork 213 is fixedly connected inside the swing port 212. A swing block 214 is rotatably installed in the middle of the top of the retaining rings 209. A nozzle 217 is rotatably connected between the swing blocks 214 through bearings 215. Multiple upper nozzles 218 are connected to the bottom of the nozzle 217. The two support rods 202 and the nozzle 217 form a triangle. The support rods 202 and the nozzle 217 cooperate to support and stabilize the retaining rings 209. The swing block 214 rotates around the swing opening 212, which provides rotation space for the material stop ring 209 to rotate. Several embedded rods 207 are welded to the top of the adjusting tube 205 and the adjusting rod 206. An adjusting cylinder 208 is installed at one end of the adjusting tube 205. The output end of the adjusting cylinder 208 is connected to one end of the adjusting tube 205. The adjusting cylinder 208 can drive the adjusting tube 205 and the adjusting rod 206 to move inside the sliding frame 204, thereby driving the embedded rods 207 to move. The embedded rods 207 are movably embedded inside the adjacent U-shaped fork 213. The movement of the embedded rods 207 applies a force to the U-shaped fork 213. The embedded rods 207 move along the inside of the U-shaped fork 213, pushing the material stop ring 209 to rotate around the swing block 214. The base 1 has a lifting frame 216 installed at the top of both ends. The bottom of the lifting frame 216 is rotatably connected to the nozzle 217. One end of the nozzle 217 is connected to a swing gear 220. A swing rack 221 is slidably connected to the top of the swing gear 220 on one side of the lifting frame 216. A swing cylinder 222 is installed on the top of the swing rack 221. The output end of the swing cylinder 222 is connected to one end of the swing rack 221. When the swing cylinder 222 drives the swing rack 221 to move, it can drive the swing gear 220 and the nozzle 217 to rotate. A scraper 219 is welded to the outside of the nozzle 217 and between two adjacent swing blocks 214. The nozzle 217 can rotate inside the swing block 214. When the nozzle 217 rotates and drives the scraper 219 to contact the inner wall of the drum 201, the scraper 219 can scrape off the material adhering to the inner wall of the drum 201 to prevent the material from accumulating on the inner wall of the drum 201. One end of the nozzle 217 is connected to one end of the delivery pipe 224 via a rotating joint 223. The other end of the delivery pipe 224 is connected to one end of the water control valve 225. The other end of the water control valve 225 is connected to the water outlet of an external water pump. One side of the delivery pipe 224 is connected to one end of the air supply tee 227 via an air control valve 226. The other two ends of the air supply tee 227 are respectively connected to one end of the heating cylinder 228 and one end of the check valve 230. An air supply heating wire 229 is installed inside the heating cylinder 228. The other end of the heating cylinder 228 is connected to the air outlet of an external air pump. The air supply heating wire 229 can heat the flowing air. By controlling the water control valve 225 and the air control valve 226, the delivered water and hot air can enter the interior of the nozzle 217. The other end of the check valve 230 is connected to the top of the regulating pipe 205 via a hose 231. When water is supplied to the regulating pipe 205, the check valve 230 can prevent water from entering the air supply tee 227. The bottom of the supply pipe 224 is connected to one end of the water distribution valve 232. The other end of the water distribution valve 232 is also connected to the top of the regulating pipe 205 via a hose 231. When the water distribution valve 232 is opened, the water inside the supply pipe 224 can flow through the water distribution valve 232 into the regulating pipe 205. One end of the base 1 is provided with a waste removal and discharge assembly 3, which includes a discharge box 301, a receiving membrane 302, a side plate 303, an air inlet pipe 304, an air outlet pipe 305, a bending cavity 306, a bending perforated plate 307, a collection box 308, a dust exhaust pipe 309, a vacuum cleaner 310, a heating box 311, a drying heating wire 312, an air pump 313, a recovery pipe 314, a collection box 315, a distribution tee 316, a heating cover 317, an exhaust pipe 318, a triangular frame 319, a rotating shaft 320, a cam 321, a fan 322, an air collection cover 323, and a conveyor belt 324. A discharge box 301 is installed at one end of the base 1 and at the bottom of the adjacent roller 201. Two receiving membranes 302 are installed on both sides of the discharge box 301. Side plates 303 are connected to both ends of the receiving membranes 302. Several triangular frames 319 are connected between the two opposite side plates 303. The receiving membranes 302 cover the outside of the triangular frames 319. A conveyor belt 324 is installed at the bottom of the discharge box 301. A rotating shaft 320 is rotatably mounted in the middle of the triangular frame 319. Cams 321 are connected to both ends of the outer side of the rotating shaft 320. Fans 322 are connected to both ends of the rotating shaft 320. A wind collector 323 is connected to the opposite side of the side plate 303. The fan 322 is located inside the adjacent wind collector 323. An air inlet pipe 304 is connected to the middle of one side plate 303, and an air outlet pipe 305 is connected to the middle of the other side plate 303. The air inlet pipe 304 and the air outlet pipe 305 are connected internally to adjacent air collection hoods 323. A heating box 311 is installed on one side of the discharge box 301. A drying heating wire 312 is installed inside the heating box 311. One side of the heating box 311 is connected to one end of the air inlet pipe 304. An air pump 313 is installed on one side of the heating box 311. The air outlet of the air pump 313 is connected to the other side of the heating box 311. One end of the air outlet pipe 305 is connected to one end of the recovery pipe 314. The other end of the recovery pipe 314 is connected to a collection pipe. Box 315, one side of the collection box 315 is connected to one end of the distribution tee 316, and the two ends of the roller 201 near the discharge box 301 are fitted with heating covers 317. The other two ends of the distribution tee 316 are respectively connected to the bottom of the two heating covers 317. The top of the heating cover 317 is connected to the exhaust pipe 318. The air pump 313 can deliver air into the heating box 311. After the air is heated by the drying heating wire 312, it will enter the receiving membrane 302. After the hot air is heated by the receiving membrane 302, it will enter the heating cover 317 through the air outlet pipe 305, the recovery pipe 314, the collection box 315 and the distribution tee 316. The receiving membranes 302 are arranged in a crisscross pattern from top to bottom. The receiving membranes 302 are made of high-temperature resistant rubber, possessing good flexibility and high-temperature resistance. The gaps between the receiving membranes 302 form bending cavities 306. Bending perforated plates 307 are connected to both ends of the bending cavities 306 on both sides of the discharge box 301. A collection box 308 is connected to the outer side of one bending perforated plate 307. A vacuum cleaner 310 is installed on one side of the discharge box 301 near the collection box 308. The bottom of the collection box 308 is connected to the suction end of the vacuum cleaner 310 via a dust exhaust pipe 309. After the fertilizer granules are formed, they will first fall into the discharge box 301 and contact the top receiving membrane 302. Then, under the action of gravity and the guidance of the receiving membrane 302, the fertilizer particles pass through the bending cavity 306 and fall onto the conveyor belt 324 at the bottom. The receiving membrane 302 is filled with air, which can buffer the impact of the fertilizer particles and prevent the fertilizer particles from being damaged during the descent. As the fertilizer particles descend step by step inside the bending cavity 306, the vacuum cleaner 310 also operates at the same time. Under the guidance of the vacuum cleaner 310, the dust particles mixed in with the fertilizer particles will follow the flowing air through the bending perforated plate 307, the bending cavity 306, the collection box 308 and the dust exhaust pipe 309 into the vacuum cleaner 310, and the vacuum cleaner 310 collects the dust. Water control valve 225, air control valve 226 and water distribution valve 232 are all electrically controlled valves. The input terminals of regulating cylinder 208, swing cylinder 222, water control valve 225, air control valve 226, air supply heating wire 229, water distribution valve 232, control motor 236, vacuum cleaner 310, drying heating wire 312, air supply pump 313 and conveyor belt 324 are electrically connected to the external power supply output terminal through the controller. The controller can control each electrical component, which facilitates the automated control of the equipment.

[0022] The working principle and usage process of the present invention: There are three rollers 201, and the rollers 201 are connected one after the other. The first roller 201 away from the discharge box 301 is set as the feeding cylinder, the middle roller 201 is set as the forming cylinder, and the roller 201 close to the discharge box 301 is set as the discharge cylinder. When processing fertilizer granules, firstly, the separate control motor 236 drives each roller 201 to rotate. The rotational speed relationship between the rollers 201 is: feed cylinder > forming cylinder > discharge cylinder. A conveyor belt or auger transports the fertilizer raw material into the feed cylinder. Simultaneously, the water control valve 225 is opened, and the air control valve 226 and the water distribution valve 232 are closed. Water pumped by an external pump flows through the water control valve 225, the conveying pipe 224, and the rotating joint 223 into the spray pipe 217, and finally sprays out from the upper nozzle 218. The sprayed water enters the feed cylinder and forming cylinder. Under the action of centrifugal force, the fertilizer raw material accelerates agglomeration inside the high-speed feed cylinder, and the fertilizer raw material is initially formed inside the feed cylinder. The initially formed fertilizer granules enter the medium-speed forming cylinder, where surface polishing is performed to make the fertilizer granule structure more compact and the surface smoother. Subsequently, the polished fertilizer granules enter the discharge cylinder, and the external air pump... Air is supplied into the heating cylinder 228. After being heated by the air supply heating wire 229, the air flows sequentially through the air supply tee 227, check valve 230, regulating pipe 205, and protective air box 234. The hot air is sprayed out from the lower nozzle 233 and the protective nozzle 235. The hot air sprayed from the lower nozzle 233, together with the rotation of the discharge cylinder, performs preliminary drying on the surface of the fertilizer granules. During the subsequent transfer of fertilizer granules, the surface of the fertilizer granules is initially hardened, which enhances the impact resistance of the fertilizer granules and reduces granule damage during subsequent granule transfer, thereby improving the quality of fertilizer products. At the same time, the fertilizer granules are preliminarily dried during the forming process, which shortens the drying time of subsequent granules, shortens the overall processing time, and improves the overall processing efficiency. In addition, the air sprayed from the protective nozzle 235 forms an air wall at the connection between the forming cylinder and the discharge cylinder, preventing water mist inside the forming cylinder from entering the discharge cylinder and ensuring the stability of drying. During the water spraying process of the upper nozzle 218, the swing cylinder 222 drives the swing rack 221 to move back and forth. The swing rack 221 meshes with the swing gear 220, which drives the spray pipe 217 and the upper nozzle 218 to rotate and swing. The swing of the upper nozzle 218 increases the effective range of the upper nozzle 218, so that the water can be fully mixed with the raw materials and improve the quality of granule forming. At the same time, the swing of the spray pipe 217 can make the scraper 219 contact the inner wall of the drum 201 at intervals, preventing the raw materials from sticking and accumulating on the inner wall of the drum 201, so that the equipment also has a self-cleaning function during processing. When fertilizer is processed inside the drum 201, the regulating cylinder 208 is controlled according to the composition of the raw material. The regulating cylinder 208 drives the regulating pipe 205 and the regulating rod 206 to move inside the sliding frame 204. The regulating pipe 205 and the regulating rod 206, in turn, drive the embedded rod 207 to move inside the U-shaped fork 213. The two support rods 202 and the nozzle 217 form a triangle. Under the limiting support of the nozzle 217 and the support rods 202, the material-blocking ring 209 rotates around the swing block 214. The support port 211 provides rotation space for the rotation of the material-blocking ring 209, thereby realizing the control of the rotation of the material-blocking ring 209 by controlling the extension and retraction length of the output end of the regulating cylinder 208. The larger the rotation angle of the retaining ring 209, the larger the gap between the retaining ring 209 and the roller 201, and the shorter the residence time of fertilizer granules inside the roller 201. When the fertilizer raw material is easy to form, increasing the rotation angle of the retaining ring 209 allows the formed granules to be quickly discharged from inside the roller 201. When the fertilizer raw material is not easy to form, decreasing the rotation angle of the retaining ring 209 allows the fertilizer granules to be fully formed inside the roller 201. By flexibly controlling the rotation angle of the retaining ring 209, and flexibly controlling the rotation speed of each roller 201, the quality of fertilizer granule forming is guaranteed while the production speed of fertilizer granules is faster. After the fertilizer granules are discharged, they enter the discharge box 301 and come into contact with the top receiving membrane 302. The receiving membranes 302 are arranged in a crisscross pattern from top to bottom. Under the action of gravity and the guidance of the receiving membranes 302, the fertilizer granules fall step by step inside the bending cavity 306 onto the bottom conveyor belt 324. The receiving membranes 302 are made of high-temperature resistant flexible rubber, which can buffer the descent of the fertilizer granules and prevent them from breaking during the descent, thus protecting the fertilizer granules and improving the quality of the fertilizer product. At the same time, the air pump 313 supplies air into the heating box 311. The air is heated by the drying heating wire 312 and then enters the receiving membrane 302. The hot air can further dry the fertilizer granules. Combined with the step-by-step descent, it further enhances the surface hardness of the granules and further enhances the impact resistance of the fertilizer granules. During the subsequent granule transfer, it reduces granule damage and further improves the quality of the fertilizer product. As the fertilizer granules descend step by step inside the bending cavity 306, the vacuum cleaner 310 also operates simultaneously. Guided by the vacuum cleaner 310, dust particles mixed in with the fertilizer granules are carried by the flowing air through the bending perforated plate 307, bending cavity 306, collection box 308 and dust exhaust pipe 309 into the vacuum cleaner 310. The vacuum cleaner 310 collects the dust, making the produced fertilizer granules more intact and further improving product quality. Moreover, the collection of dust contained in the fertilizer granules during the transfer process makes the production more environmentally friendly. When hot air flows inside the receiving membrane 302, the air collecting hood 323 acts as an air collecting device. When the hot air flows through the air collecting hood 323, it will drive the fan 322, the rotating shaft 320 and the cam 321 to rotate. The rotation of the cam 321 causes the center of gravity to be off the center line of the rotating shaft 320, which in turn drives the rotating shaft 320 to vibrate. Under the vibration transmission of the triangular frame 319, the hot air flowing inside the receiving membrane 302 will drive the receiving membrane 302 to vibrate. The vibration can make the particles fall smoothly and ensure the stability of the discharge. At the same time, the vibration can make the dust easier to be raised, thus improving the quality of impurity removal. After the hot air is heated by the material membrane 302, it will enter the heating hood 317 through the air outlet pipe 305, the recovery pipe 314, the collection box 315 and the distribution tee 316. The hot air inside the heating hood 317 can heat the discharge cylinder. Together with the hot air sprayed from the lower nozzle 233, the two components work together to perform preliminary drying of the fertilizer granules, making the surface of the fertilizer granules more uniformly dried and improving the quality of preliminary drying. After the fertilizer granules are processed, the separate control motor 236 drives each roller 201 to rotate, closes the air control valve 226, and opens the water control valve 225 and the water distribution valve 232. The water pump delivers water that sprays out not only from the upper nozzle 218, but also flows through the water distribution valve 232 into the regulating pipe 205 and sprays out from the lower nozzle 233. The water sprayed from the upper nozzle 218 and the lower nozzle 233 can clean each roller 201 without manual cleaning, reducing labor costs.

[0023] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A green, automated, environmentally friendly granulation device for fertilizer production, comprising a base (1), characterized in that, The base (1) is provided with a fertilizer granulation assembly (2) on top, and the fertilizer granulation assembly (2) includes a roller (201). The base (1) is rotatably connected to a roller (201) on top. There are three rollers (201). Support rods (202) are installed on both sides inside the rollers (201). Sliding frames (204) are installed at both ends of the base (1). An adjusting pipe (205) is slidably connected inside one of the sliding frames (204). An adjusting rod (206) is slidably connected in the middle of another sliding frame (204). The adjusting pipe (205) and the adjusting rod (206) are connected through a protective air box (234). Multiple lower nozzles (233) are connected to the bottom of the adjusting pipe (205). Several material-stopping rings (209) are connected through the two support rods (202). A horizontal plate (210) is connected in the middle of the material-stopping rings (209). Support openings (211) are provided at both ends of the horizontal plate (210). The support rods (202) pass through the interior of the corresponding support openings (211). A swing opening (212) is provided in the middle of the horizontal plate (210). A U-shaped fork (213) is fixedly connected inside the swing opening (212). A swing block (214) is rotatably installed in the middle of the top of the material-stopping rings (209). A spray pipe (217) is rotatably connected between the swing blocks (214) through a bearing (215). Multiple upper nozzles (218) are connected to the bottom of the spray pipe (217).

2. The automatic and environmentally friendly granulation equipment for green fertilizer production according to claim 1, characterized in that, The adjusting tube (205) is located inside one roller (201), the adjusting rod (206) is located inside the other two rollers (201), the support rod (202) is connected to support frames (203) at both ends, and the sliding frame (204) is fixedly connected to the top of an adjacent support frame (203).

3. The automatic and environmentally friendly granulation equipment for green fertilizer production according to claim 1, characterized in that, The top of the regulating tube (205) and the regulating rod (206) are welded with several embedded rods (207). One end of the regulating tube (205) is equipped with a regulating cylinder (208). The output end of the regulating cylinder (208) is connected to one end of the regulating tube (205). The embedded rods (207) are movably embedded in the interior of the adjacent U-shaped fork (213). Several protective nozzles (235) are connected to the outside of the protective air box (234).

4. The automatic and environmentally friendly granulation equipment for green fertilizer production according to claim 1, characterized in that, The base (1) is equipped with a hoisting frame (216) at both ends. The bottom of the hoisting frame (216) is rotatably connected to the nozzle (217). A scraper (219) is welded to the outside of the nozzle (217) and between two adjacent swing blocks (214).

5. The automatic and environmentally friendly granulation equipment for green fertilizer production according to claim 4, characterized in that, One end of the nozzle (217) is connected to a swing gear (220). A swing rack (221) is slidably connected to the top of the swing gear (220) on one side of the hoisting frame (216). A swing cylinder (222) is installed on the top of the swing rack (221). The output end of the swing cylinder (222) is connected to one end of the swing rack (221). One end of the nozzle (217) is connected to one end of the delivery pipe (224) through a rotating joint (223).

6. The automatic and environmentally friendly granulation equipment for green fertilizer production according to claim 5, characterized in that, The other end of the delivery pipe (224) is connected to one end of the water control valve (225), and the other end of the water control valve (225) is connected to the outlet of the external water pump. One side of the delivery pipe (224) is connected to one end of the air supply tee (227) through the air control valve (226). The other two ends of the air supply tee (227) are respectively connected to one end of the heating cylinder (228) and one end of the check valve (230). An air supply heating wire (229) is installed inside the heating cylinder (228), and the other end of the heating cylinder (228) is connected to the outlet of the external air pump.

7. The automatic and environmentally friendly granulation equipment for green fertilizer production according to claim 6, characterized in that, The other end of the check valve (230) is connected to the top of the regulating pipe (205) via a hose (231). The bottom of the conveying pipe (224) is connected to one end of the water distribution valve (232). The other end of the water distribution valve (232) is also connected to the top of the regulating pipe (205) via a hose (231). A separate control motor (236) is installed on the top of the base (1) and on one side of the roller (201).

8. The automatic and environmentally friendly granulation equipment for green fertilizer production according to claim 7, characterized in that, The base (1) is provided with a cleaning and discharge assembly (3) at one end, and the cleaning and discharge assembly (3) includes a discharge box (301). A discharge box (301) is installed at one end of the base (1) and at the bottom of the adjacent roller (201). Two receiving membranes (302) are installed on both sides inside the discharge box (301). Side plates (303) are connected to both ends of the receiving membranes (302). Several triangular frames (319) are connected between the two opposite side plates (303). The receiving membranes (302) cover the outside of the triangular frames (319). A conveyor belt (324) is installed at the bottom of the discharge box (301). A rotating shaft (320) is rotatably mounted in the middle of the triangular frame (319). Cams (321) are connected to both ends of the outer side of the rotating shaft (320). Fans (322) are connected to both ends of the rotating shaft (320). A wind collector (323) is connected to the opposite side of the side plate (303). The fan (322) is located inside the adjacent wind collector (323). An air inlet pipe (304) is connected to the middle of one side plate (303), and an air outlet pipe (305) is connected to the middle of the other side plate (303). The air inlet pipe (304) and the air outlet pipe (305) are connected to the interior of the adjacent air collection hood (323). A heating box (311) is installed on one side of the discharge box (301). A drying heating wire (312) is installed inside the heating box (311). One side of the heating box (311) is connected to one end of the air inlet pipe (304). An air pump (313) is installed on one side of the heating box (311). The air outlet of the air pump (313) is connected to the other side of the heating box (311).

9. The automatic and environmentally friendly granulation equipment for green fertilizer production according to claim 8, characterized in that, The receiving membranes (302) are stacked in a crisscross pattern from top to bottom, and the gaps between the receiving membranes (302) form bending cavities (306). The two sides of the discharge box (301) are connected to bending perforated plates (307) corresponding to the two ends of the bending cavities (306). A collection box (308) is connected to the outside of one side of the bending perforated plate (307). A vacuum cleaner (310) is installed on one side of the discharge box (301) near the collection box (308). The bottom end of the collection box (308) is connected to the suction end of the vacuum cleaner (310) through a dust exhaust pipe (309). One end of the exhaust pipe (305) is connected to one end of the recovery pipe (314), and the other end of the recovery pipe (314) is connected to a collection box (315). One side of the collection box (315) is connected to one end of the distribution tee (316). The outer ends of the roller (201) near the discharge box (301) are fitted with heating covers (317). The other two ends of the distribution tee (316) are respectively connected to the bottom of the two heating covers (317). The top of the heating cover (317) is connected to an exhaust pipe (318).

10. The automatic and environmentally friendly granulation equipment for green fertilizer production according to claim 8, characterized in that, The water control valve (225), air control valve (226) and water distribution valve (232) are all electrically controlled valves. The input ends of the regulating cylinder (208), swing cylinder (222), water control valve (225), air control valve (226), air supply heating wire (229), water distribution valve (232), sub-control motor (236), vacuum cleaner (310), drying heating wire (312), air supply pump (313) and conveyor belt (324) are electrically connected to the output end of an external power supply through a controller.

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