A long-acting compound fertilizer production system and production method

Abstract

The present invention relates to the field of fertilizer production, and in particular to a long-acting compound fertilizer production system, including: a moving mechanism, the moving mechanism is used to transport materials and make the materials form complete fertilizer particles through compression and splicing, including a first compression roller driven by a motor and a second compression roller connected to the first compression roller through gear transmission; a compression mechanism, the compression component is arranged on the moving component and is used to pre-press two raw materials respectively, including a first compression component arranged on the first compression roller and used to promote the compaction of the middle part of the raw material and a second compression component arranged on the second compression roller and used for gluing; a cooling mechanism, the cooling mechanism is arranged below the device and is used to accelerate the cooling of the particles under the premise of ensuring the integrity of the particles, including a grinding component and a cooling component. The technical problems of poor granulation effect and uneven size are solved.

Description

Technical Field

[0001] The present invention relates to the field of fertilizer production, and in particular to a long-acting compound fertilizer production system and a production method. Background Art

[0002] The development of planting industry in agricultural production is inseparable from fertilizer. Fertilizer refers to a kind of substance that provides one or more essential nutrients for plants, improves soil properties and soil fertility, and is one of the material bases of agricultural production. In the production process, the raw materials to be used need to be mixed and proportioned, processed by chemical or physical methods, and then the proportioned and mixed materials are produced into granules by granulating equipment for convenient use. In addition, in the use process of the existing granulator, the fertilizer raw materials need to be mixed and proportioned first and then transported to the granulating equipment for granulation. There are many production processes, resulting in low work efficiency. Patent document with patent number CN112354480A discloses a granulating equipment for soil fertilizer production, including a frame, a first motor and a second motor, the surface of the frame is fixedly connected with the first motor, and the first motor is installed with a first rotating main shaft, one end of the first rotating main shaft is fixedly connected with a first bevel gear, the surface of the frame is fixedly connected with a bed frame, and the bed frame is installed with a mixing proportioning barrel, and the mixing proportioning barrel is movably connected with a pelletizing wheel.

[0003] However, in actual use, most granulation equipment performs granulation by cutting and crushing, resulting in poor granulation effect and uneven particle size. Summary of the invention

[0004] The purpose of the present invention is to address the shortcomings of the prior art. By setting up a moving mechanism and a pressing mechanism, the waste particles are pressed and formed. By pre-pressing the two raw materials separately and then splicing them together, relatively uniform fertilizer particles are formed, thereby solving the technical problems of poor granulation effect and uneven size.

[0005] In view of the above technical problems, the technical solutions adopted are as follows:

[0006] A long-acting compound fertilizer production system, comprising:

[0007] A moving mechanism, which is used to transport the material and enable the material to be pressed and assembled to form complete fertilizer particles, and includes a first pressing roller driven by a motor and a second pressing roller connected to the first pressing roller through a gear transmission;

[0008] A pressing mechanism, wherein the pressing assembly is arranged on the moving assembly and is used to pre-press the two raw materials respectively, including a first pressing assembly arranged on the first pressing roller and used to promote compaction of the middle part of the raw material and a second pressing assembly arranged on the second pressing roller and used to apply glue;

[0009] The cooling mechanism is arranged below the device and is used to accelerate the cooling of the particles while ensuring the integrity of the particles, and includes a grinding component and a cooling component.

[0010] Preferably, the surfaces of the first pressing roller and the second pressing roller are provided with receiving holes for uniform and regular arrangement, and a hemispherical rubber mold for auxiliary raw material extrusion molding and a support block arranged at the bottom of the rubber mold and used to ensure the molding of the rubber mold are fixed in the receiving holes.

[0011] It also includes a shell plate arranged outside the first pressing roller and the second pressing roller and tightly fitting with the surfaces of the first pressing roller and the second pressing roller, and a material box respectively arranged directly above the first pressing roller and the second pressing roller and used for releasing raw materials.

[0012] Preferably, the first pressing assembly includes a slide cylinder arranged inside the first pressing roller, a push rod slidably connected inside the slide cylinder and provided with a coupling block at the outer end thereof, an electric cylinder arranged inside the push rod and with the end of the telescopic rod fixedly connected to the bottom of the rubber mold, a cam arranged in the middle of the first pressing roller and fitted with the coupling block, and also includes a pre-pressing member arranged on the outer shell plate of the first pressing roller.

[0013] Preferably, the pre-pressing member comprises a first hydraulic cylinder arranged on the housing, a first piston arranged on the telescopic rod of the first hydraulic cylinder, and a pressure plate slidably connected to the edge of the first piston and having a spring arranged between the pressure plate and the first piston.

[0014] Preferably, a hemispherical groove is provided in the middle of the first piston, a slidingly connected bump is provided at the outer edge of the groove, an exhaust hole is provided at the deepest part of the groove, and the exhaust hole is connected to an air bag arranged behind the bump.

[0015] Preferably, the second pressing assembly includes a slide cylinder and a push rod that are arranged in the same manner as the first pressing assembly, except that the rubber mold and the support block are arranged inside the slide cylinder and slidably connected to the rotating shaft, a track groove fixed in the middle of the second pressing roller, a slider fixed at the end of the slide cylinder and fitted on the track groove and moving along the track groove, the rotating shaft is rotatably connected to the second pressing roller, and also includes a bevel gear arranged on the rotating shaft, a gear ring that drives the bevel gear and the rotating shaft to rotate and is driven by a motor, and a rubber coating member arranged on the outer shell plate of the second pressing roller.

[0016] Preferably, the glue coating part includes a second hydraulic cylinder arranged on the shell plate, a second piston arranged on the telescopic rod of the second hydraulic cylinder, a ball arranged in the middle of the second piston and driven to rotate by a motor, a guide groove arranged on the surface of the ball, a glue storage tank fixed on the shell plate, and a glue outlet pipe arranged inside the piston.

[0017] Preferably, the grinding assembly is arranged on one side of the second pressure roller, including a mobile frame arranged on one side of the second pressure roller and slidably connected to the frame, a connecting shaft rotatably connected to the mobile frame, a grinding roller arranged above the connecting shaft and rotatably connected to the mobile frame, and a driving wheel that drives the sliding frame to slide back and forth linearly through a gear rack transmission method.

[0018] Preferably, the cooling assembly comprises a feed port arranged on one side of the second pressure roller, a spiral slide rail arranged below the feed port, a conveyor belt arranged below the spiral slide rail, and a fan arranged below the conveyor belt;

[0019] The conveyor belt adopts a mesh crawler belt for transmission, and a fan is arranged under the crawler belt to blow air upwards.

[0020] As another preferred embodiment, the method for producing a long-acting compound fertilizer is applied to a long-acting compound fertilizer production system, comprising the following steps:

[0021] Step one, pre-pressing step, raw material one and raw material two are respectively added into the material box located above the first pressing roller and the second pressing roller, and as the first pressing roller and the second pressing roller rotate, the raw materials are respectively filled into the rubber mold, wherein the first pressing roller rotates, and the raw material moves to the pre-pressing position, and the first hydraulic cylinder drives the piston to move to squeeze the raw material in the rubber mold of the first pressing roller, and through the setting of the piston, a hemispherical bulge is pressed out in the middle of the raw material, and the spherical position of the outer end and the bulge position are compacted, while a certain looseness is maintained around the bulge; at the same time, the second pressing roller moves the raw material to press a hemispherical groove in the middle of the raw material, and the edge position is kept loose, and during pressing, the ball rotates, and the glue storage tank transports glue liquid to the surface of the ball, and the glue liquid is evenly coated on the surface of the hemispherical groove through the ball.

[0022] Step 2, the splicing step, the pre-pressed raw material continues to move, when the rubber molds of the two rollers are docked, the push rods of the first roller and the second roller push the rubber molds closer to each other, buckle the two pre-pressed hemispheres together, and apply pressure. The middle position has been bonded by glue, and the loose parts on the edges are squeezed and fused together to form complete round particles. Then the push rod of the first roller pushes the particles completely into the second roller and moves with the second roller.

[0023] Step three, grinding and cooling step, the particles continue to use, when moving to a horizontal position, the receiving shaft moves and contacts the particles, the particles rotate under the drive of the shaft, the joints of the particles are polished by the grinding roller to keep the particles in a stable shape, the particles are polished, the receiving shaft moves out, the particles fall into the feed port, and move down through the spiral slide rail to fall onto the conveyor belt. During the grinding and falling process, the fan continues to blow air upward to promote the cooling of the particles.

[0024] Beneficial effects of the present invention:

[0025] (1) In the present invention, a moving component is provided, and the first pressing roller and the second pressing roller are used to move the raw materials, thereby eliminating the steps of accurately proportioning and mixing the raw materials. The rubber mold is provided to facilitate the pressing and molding of the raw materials, thereby ensuring the uniformity of the final fertilizer shape after molding.

[0026] (2) In the present invention, a pressing assembly is provided to pre-press the two raw materials respectively, and then the two pre-pressed hemispheres are assembled together. The assembly process uses glue bonding and direct pressing to improve the strength of the finished particles and the release effect of the fertilizer.

[0027] (3) In the present invention, the grinding assembly is used to grind the joint parts of the assembled particles through a cooling mechanism, and the particles are transported through a spiral slide rail, which can avoid the breakage of the particles caused by insufficient strength before drying and accelerate the cooling of the particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0029] Figure 1 It is a schematic diagram of the overall structure of a long-acting compound fertilizer production system.

[0030] Figure 2 Schematic diagram of the relevant structure of the first pressing roller.

[0031] Figure 3 It is a partial structural diagram of the moving mechanism.

[0032] Figure 4 It is a schematic structural diagram of the first pressing component.

[0033] Figure 5 It is a schematic diagram of the structure of the pre-pressed part.

[0034] Figure 6 Schematic diagram of the working status of the pre-pressed part.

[0035] Figure 7 This is a schematic diagram of the shape of the raw material after pre-pressing.

[0036] Figure 8 It is a schematic structural diagram of the second pre-pressing component.

[0037] Fig. 9 It is a structural schematic diagram of the glue-coated part.

[0038] Fig.10 It is a schematic diagram of the structure of the cooling mechanism.

[0039] Fig.11 The present invention is a schematic diagram of a production method of a long-acting compound fertilizer production system. DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings.

[0041] Embodiment 1

[0042] like Figure 1 , Figure 7 As shown, a long-acting compound fertilizer production system comprises:

[0043] A moving mechanism 1, which is used to transport materials and make the materials form complete fertilizer particles through compression and splicing, and includes a first pressing roller 11 driven by a motor and a second pressing roller 12 connected to the first pressing roller 11 through a gear transmission;

[0044] A pressing mechanism 2, wherein the pressing assembly is arranged on the moving assembly and is used to pre-press the two raw materials respectively, including a first pressing assembly 21 arranged on the first pressing roller 11 and used to promote compaction of the middle part of the raw material, and a second pressing assembly 22 arranged on the second pressing roller 12 and used to apply glue;

[0045] The cooling mechanism 3 is arranged at the bottom of the device and is used to accelerate the cooling of the particles while ensuring the integrity of the particles. The cooling mechanism 3 includes a grinding component 31 and a cooling component 32 .

[0046] In this embodiment, by providing the moving mechanism 1 and the pressing mechanism 2, rapid production of binary compound fertilizer is achieved, and by changing the structure of the binary compound fertilizer, the effectiveness of the compound fertilizer in subsequent use is improved, so that the two raw materials can be released quickly.

[0047] In detail, the device pre-presses the two raw materials separately, and presses the pre-pressed semi-finished products together as a whole, so that the two components of the final fertilizer granules can be directly released. Compared with the prior art, the raw materials are proportioned and then pressed into shape as a whole. This device does not require weighing and proportioning mixing steps, and the raw materials can be directly pressed by utilizing the movement of the pressing roller.

[0048] At the same time, by pressing the two raw materials separately and then bonding them together, both raw materials can be directly exposed to the outside world. Compared with the method of mixing the two raw materials and then pressing them into shape, when one of the raw materials is less, it is easy for the less raw material to be mixed in the more raw material, causing the more raw material to affect the release of the less raw material, thereby making the release process of the less raw material uneven. This situation will not occur if the two raw materials are separated, and the two raw materials can be released directly.

[0049] It should be noted that by pre-pressing the two raw materials, on the one hand, it should be noted that if the two raw materials are completely pressed, more glue will be needed to bond the two raw materials together at this time. If the two raw materials in a loose state are directly pressed together, due to the difference in the properties of the raw materials, the final formed particles may split along the junction of the two raw materials when receiving external force, which is not conducive to transportation and use.

[0050] Further, if Figure 2 , Figure 3 As shown, the surfaces of the first pressing roller 11 and the second pressing roller 12 are both provided with receiving holes 111 for uniform and regular arrangement, and a hemispherical rubber mold 112 for auxiliary raw material extrusion molding and a support block 113 arranged at the bottom of the rubber mold 112 and used to ensure that the rubber mold 112 is formed are fixed in the receiving holes 111.

[0051] It also includes a shell plate 13 arranged outside the first pressing roller 11 and the second pressing roller 12 and tightly fitted with the surfaces of the first pressing roller 11 and the second pressing roller 12, and a material box 131 respectively arranged directly above the first pressing roller 11 and the second pressing roller 12 and used for releasing raw materials.

[0052] In this embodiment, the receiving hole 111 and the rubber mold 112 are provided to assist the receiving and molding of the raw material, so that the raw material is filled into the receiving hole 111 and is molded in the rubber mold 112 by external force extrusion.

[0053] In detail, the two raw materials enter the receiving holes 111 through the material box 131 respectively, the first pressing roller 11 and the second pressing roller 12 rotate, and the shell plate 13 is used to maintain a constant amount of raw materials in each receiving hole 111. Through the rotation of the receiving holes 111, the raw materials are subjected to pre-pressing and splicing steps at one time to form complete particles. Since pressure needs to be applied to press the raw materials, the rubber mold 112 is prone to deformation when receiving pressure, so a support block 113 is provided to keep the rubber mold 112 stable.

[0054] It should be noted that the rubber mold 112 is arranged in the accommodating hole 111. The shaping of the rubber mold 112 can facilitate the pushing out of the pressed raw materials therein. When the raw materials are extruded, the elasticity of the rubber mold 112 can be used to make the raw materials pressed more tightly and reduce the occurrence of side wall adhesion.

[0055] Further, if Figure 4 As shown, the first pressing assembly 21 includes a slide 211 arranged inside the first pressing roller 11, a push rod 212 slidably connected inside the slide 211 and provided with a coupling block 2121 at the outer end thereof, an electric cylinder arranged inside the push rod 212 and with the end of the telescopic rod fixedly connected to the bottom of the rubber mold 112, a cam 213 arranged in the middle of the first pressing roller 11 and fitted with the coupling block 2121, and also includes a pre-pressing piece 214 arranged on the outer shell plate 13 of the first pressing roller 11.

[0056] In this embodiment, the push rod 212 and the cam 213 are provided to push the raw material in the receiving hole 111, so that the raw material can move to a specific position and be pushed out.

[0057] In detail, after the raw material is filled into the rubber mold 112, the first pressing roller 11 rotates to pre-press the raw material first. At this time, the push rod 212 serves as a supporting base, and cooperates with the pre-pressing piece 214 to perform preliminary pressing on the raw material in the mold. At the same time, an electric cylinder is arranged inside the push rod 212, and the telescopic rod of the electric cylinder extends and shortens in sequence to push the bottom of the rubber mold 112, and push the raw material at the bottom upward, so that the raw material can be filled into the piston of the pre-pressing piece 214, which is also beneficial to the exhaust of the raw material and facilitates the cooperation with the pre-pressing piece 214 to press the raw material into a spherical protrusion.

[0058] Then after the pressing is completed, the pressing rollers continue to rotate. As the pressing rollers rotate, the receiving holes 111 of the first pressing roller 11 and the second pressing roller 12 are aligned. At this time, under the action of the cam 213, the push rods 212 on the first pressing roller 11 and the second pressing roller 12 are pushed out together, and the mutual squeezing force of the two push rods 212 is used to make the two hemispherical raw materials fit together to form complete fertilizer particles. After the fertilizer particles are assembled, the push rod 212 in the first pressing roller 11 pushes the particles into the receiving holes 111 of the second pressing roller 12, so that the particles rotate with the second pressing roller 12.

[0059] Further, if Figure 5 , Figure 6 As shown, the pre-pressing member 214 includes a first hydraulic cylinder 215 disposed on the housing, a first piston 216 disposed on the telescopic rod of the first hydraulic cylinder 215 , and a pressure plate 217 slidably connected to the edge of the first piston 216 and having a spring disposed between the first piston 216 and the pressure plate 217 .

[0060] A hemispherical groove is provided in the middle of the first piston 216 , a slidingly connected bump 2161 is provided at the outer edge of the groove, an exhaust hole 2162 is provided at the deepest part of the groove, and the exhaust hole 2162 is connected to the air bag 2163 arranged behind the bump 2161 .

[0061] In this embodiment, the first piston 216 and the hemispherical groove are provided to achieve preliminary shaping of the raw material 1 in the first pressing roller 11, so that the raw material 1 is pre-pressed into a hemispherical shape with a hemispherical protrusion on the cross section.

[0062] In detail, the first pressing roller 11 moves the raw material to the position aligned with the first piston 216. At this time, the hydraulic cylinder pushes the first piston 216 close to the rubber mold 112. While the piston is close to the rubber mold 112, the electric cylinder at the bottom of the rubber mold 112 continues to lift the mold so that the raw material can be filled into the hemispherical groove. At the same time, the piston continues to move downward to squeeze the raw material. The raw material in the middle gradually becomes compact under the pressurized environment, and the edge of the cross section is provided with a pressure plate 217. Under the action of the spring, the pressure plate 217 slides relative to the piston as the pressure increases, reducing the pressure on the edge so that the raw material will not receive such a large pressure in the middle. Even if the middle and the large arc surface are completely extruded, the edge of the cross section is not completely extruded and maintains a certain degree of looseness. At the same time, the surface of the pressure plate 217 is provided with uneven textures, so that the surface of the edge is uneven, which is convenient for the subsequent combination of the two raw materials;

[0063] It should be noted that an exhaust hole 2162 is provided in the hemispherical groove. When the raw material is extruded, the air cylinder in the middle passes into the exhaust hole 2162 and enters into the airbag 2163. The gas in the airbag 2163 increases, causing the airbag 2163 to expand. The airbag 2163 expands to squeeze out the bump 2161. After the bump 2161 is squeezed out, as the pressure increases, some grooves are left at the root of the hemispherical protrusion.

[0064] For the bonding of two raw materials, the two materials are directly pressed and bonded. Due to the different properties of the materials, when receiving external force, the particles are very likely to break directly along the joint. The cost of bonding with glue is relatively high. The present device adopts a combination of the two, and the spherical protrusion in the middle of the raw material is used to expand the contact area of ​​the two raw materials. At the same time, the area is compacted first to facilitate glue coating, and the middle position of the two materials is bonded with glue. Then, the edge position of the hemispherical shape is relatively loose, and the uneven surface is matched to make it easy for the position to bite each other. It is particularly noted that a groove is left at the root of the hemispherical protrusion through the protrusion 2161, which is conducive to the other raw material being squeezed into the groove during splicing, forming a mutually interlocking state, and achieving a better bonding effect after extrusion.

[0065] Further, if Figure 8As shown, the second pressing assembly 22 includes a slide 211 and a push rod 212 which are arranged in the same manner as the first pressing assembly 21, except that the rubber mold 112 and the support block 113 are both arranged inside the slide 211 and slidably connected to the rotating shaft 221, a track groove 222 fixed in the middle of the second pressing roller 12, a slider 223 fixed at the end of the slide 211 and fitted on the track groove 222 and moving along the track groove 222, the rotating shaft 221 is rotatably connected to the second pressing roller 12, and also includes a bevel gear 224 arranged on the rotating shaft 221, a gear ring 225 which drives the bevel gear 224 and the rotating shaft 221 to rotate and is driven by a motor, and a rubber coating member 226 arranged on the outer shell plate 13 of the second pressing roller 12.

[0066] In this embodiment, by providing the track groove 222 and the rotating shaft 221 , the slide cylinder 211 can slide along the radial direction of the second pressing roller 12 and rotate along its own axis, thereby promoting the forming of the raw material during the extrusion process.

[0067] In detail, as the second pressing roller 12 rotates, the slide cylinder 211 slides along the track of the track groove 222 under the constraint of the track groove 222, and at the same time, the rotating shaft 221 can be driven to rotate through the rotating ring, thereby realizing the rotation of the rubber mold 112, that is, as the second pressing roller 12 rotates, the raw material is first processed by the glue coating member 226, and then continues to rotate. When the two raw materials are spliced, the motor drives the rotating ring and the rotating shaft 221 to rotate, and the rotating shaft 221 rotates as a whole to rotate the rubber mold 112 and the raw material inside it. At this time, the push rod 212 extrudes the particles under the action of the cam 213, and the rotation of the rubber mold 112 drives the entire raw material particles to rotate. The raw material particles are separated from the first pressing roller 11 by rotation, so as to avoid the raw material from adhering to the rubber mold 112 of the first pressing roller 11, and at the same time make the particles more round.

[0068] After the assembly is completed, under the constraint of the track groove 222, the slide cylinder 211 moves toward the center of the first pressing roller 11, and brings the entire assembled particles into the receiving hole 111 of the second pressing roller 12, so as to facilitate the subsequent release of the particles.

[0069] It should be noted that the push rod 212 is slidably connected inside the slide cylinder 211 but does not rotate with the slide cylinder 211 .

[0070] Further, if Fig. 9 As shown, the glue coating member 226 includes a second hydraulic cylinder 2261 arranged on the shell plate 13, a second piston 2262 arranged on the telescopic rod of the second hydraulic cylinder 2261, a ball 2263 arranged in the middle of the second piston 2262 and driven to rotate by a motor, a guide groove arranged on the surface of the ball 2263, a glue storage tank 2264 fixed on the shell plate 13, and a glue outlet pipe 2265 arranged inside the piston.

[0071] In this embodiment, the second piston 2262 and the ball 2263 are provided to pre-treat the second raw material on the second pressing roller 12, so that the raw material 2 is formed into a hemispherical shape with a hemispherical depression in the middle.

[0072] In detail, after the raw material is filled into the second pressing roller 12, as the second pressing roller 12 rotates, it moves to the position of the glue coating part 226, and the second hydraulic cylinder 2261 drives the second piston 2262 to move to press the raw material, wherein the ball 2263 is arranged in the middle of the piston and follows the piston to move toward the raw material, pressing out a spherical groove on the raw material, and at the same time rotating under the drive of the motor, on the one hand, it can accelerate the forming of the groove and make the surface of the groove smoother, on the other hand, the glue in the glue storage tank 2264 is introduced into the ball 2263 through the glue outlet pipe 2265, and flows down through the guide groove on the ball 2263 to the spherical groove of the raw material. As the ball 2263 rotates, the glue is evenly coated on the inner surface of the groove.

[0073] It should be noted that the second raw material at this location is pressed, and the same process is performed on the raw material so that the middle position of the original material remains compact, while the edge position maintains a certain degree of looseness, so as to facilitate the pressing in the subsequent splicing process.

[0074] It is worth mentioning that the glue storage tank 2264 conveys glue to the ball 2263 after the second piston 2262 completes the pressing. The glue is released early, and the raw material powder is not completely compacted at this time. The glue can easily penetrate into the middle of the powder, causing the glue to fail. Wait for the powder pressing to be completed. At this time, the ball 2263 compacts and smoothes the groove surface of the raw material to facilitate the coating of glue.

[0075] The glue here can be the glue that is allowed to be added in the production of fertilizers such as humic acid.

[0076] Further, if Fig.10 As shown, the grinding assembly 31 is arranged on one side of the second pressure roller 12, including a moving frame 311 arranged on one side of the second pressure roller 12 and slidably connected to the frame, a connecting shaft 312 rotatably connected to the moving frame 311, a grinding roller 313 arranged above the connecting shaft 312 and rotatably connected to the moving frame 311, and a driving wheel 314 that drives the sliding frame to slide linearly and reciprocally through a gear rack transmission method.

[0077] In this embodiment, the receiving shaft 312 and the grinding roller 313 are provided to cooperate with the rotation of the rotating shaft 221 to achieve grinding of the particle binding position.

[0078] In detail, as the second pressure roller 12 rotates, the movable frame 311 is driven to reciprocate toward the second pressure roller 12. When a receiving hole 111 moves to the corresponding position, the movable frame 311 moves the connecting shaft 312 and the grinding roller 313 to a position close to the second pressure roller 12. At this time, under the action of the cam 213, the push rod 212 pushes the particles out of the receiving hole 111. The push rod 212 and the connecting shaft 312 fix the two ends of the particles and rotate under the action of the gear ring 225. The upper edge of the particle contacts the grinding roller 313, and the grinding roller 313 is used to grind the irregular positions of the particle joints.

[0079] It should be noted that the driving wheel 314 is provided with gear teeth and meshes with the second pressing roller 12, and an incomplete gear is fixedly connected to the driving wheel 314. The incomplete gear is arranged between two sets of opposite racks, and the racks are fixed on the movable frame. The incomplete gear is driven to rotate by the second pressing roller 12, and the incomplete gear drives the rack and the movable frame to reciprocate.

[0080] Further, if Fig.10 As shown, the cooling mechanism 3 includes a feed port 321 disposed on one side of the second pressing roller 12, a spiral slide rail 322 disposed below the feed port 321, a conveyor belt 323 disposed below the spiral slide rail 322, and a fan 324 disposed below the conveyor belt 323;

[0081] The conveyor belt 323 uses a mesh crawler belt for transmission, and the fan 324 is arranged under the crawler belt to blow air upward.

[0082] In this embodiment, by providing the spiral slide rail 322 and the fan 324 , the fertilizer particles can be moved downward through the spiral slide rail 322 after extrusion is completed, and the particles can be quickly cooled by the provided fan 324 .

[0083] In detail, after the particles are polished, they pass through the feed port 321 and enter the spiral track. The particles roll down the spiral track and then fall to the output device on the conveyor belt 323. While the particles are rolling, the fan 324 blows air upward to cool the particles. Since the particles continue to roll, the surface of the particles can be fully cooled.

[0084] The particles are made to fall through the spiral slide rail 322 to avoid damage caused by falling particles and ensure the integrity of the particles.

[0085] Embodiment 2

[0086] like Fig.11 As shown, the components identical or corresponding to those in the first embodiment are marked with the corresponding reference numerals in the first embodiment. For the sake of simplicity, only the differences from the first embodiment are described below. The second embodiment differs from the first embodiment in that:

[0087] Further, if Fig.11 As shown, the method for producing a long-acting compound fertilizer is applied to a long-acting compound fertilizer production system, comprising the following steps:

[0088] Step one, pre-pressing step, raw material one and raw material two are respectively added into the material box 131 located above the first pressing roller 11 and the second pressing roller 12, and as the first pressing roller 11 and the second pressing roller 12 rotate, the raw materials are respectively filled into the rubber mold 112, wherein the first pressing roller 11 rotates, and the raw material moves to the position of the pre-pressing part 214, and the first hydraulic cylinder 215 drives the piston to move to squeeze the raw material in the rubber mold 112 of the first pressing roller 11, and through the setting of the piston, a hemispherical protrusion is pressed out of the middle of the raw material, and the spherical position of the outer end and the protrusion position are compacted, while a certain looseness is maintained around the protrusion; at the same time, the second pressing roller 12 moves the raw material to press a hemispherical groove in the middle of the raw material, and the edge position is kept loose, and during pressing, the ball 2263 rotates, and the glue storage tank 2264 transports glue to the surface of the ball 2263, and the glue is evenly coated on the surface of the hemispherical groove through the ball 2263.

[0089] Step 2, the splicing step, the pre-pressed raw material continues to move, and when the rubber molds 112 of the two pressing rollers are connected, the push rods 212 of the first pressing roller 11 and the second pressing roller 12 push the rubber molds 112 closer to each other, and the two pre-pressed hemispheres are buckled together and pressure is applied. The middle position has been bonded by glue, and the loose parts on the edges are squeezed and fused together to form complete round particles. Then the push rod 212 of the first pressing roller 11 pushes the particles completely into the second pressing roller 12 and moves with the second pressing roller 12.

[0090] Step three, grinding and cooling step, the particles continue to be used, and when they are moved to a horizontal position, the receiving shaft 312 moves and contacts the particles, and the particles rotate under the drive of the rotating shaft 221. The joints of the particles are polished by the grinding roller 313 to keep the particles in a stable shape. After the particles are polished, the receiving shaft 312 is removed, and the particles fall into the feed port 321, and move down through the spiral slide rail 322 and fall onto the conveyor belt 323. During the grinding and falling process, the fan 324 continues to blow air upward to promote the cooling of the particles.

[0091] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "front and back", "left and right", etc. are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or component referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the invention.

[0092] Of course, in the present technical solution, those skilled in the art should understand that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the element may be multiple, and the term "one" should not be understood as a limitation on the quantity.

[0093] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art under the technical guidance of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A long-acting compound fertilizer production system, characterized in that: include: A moving mechanism (1), the moving mechanism (1) is used to transport materials and enable the materials to be pressed and assembled to form complete fertilizer particles, comprising a first pressing roller (11) driven by a motor and a second pressing roller (12) connected to the first pressing roller (11) via a gear transmission; A pressing mechanism (2), the pressing mechanism (2) being arranged on the moving mechanism (1) and used for pre-pressing the two raw materials respectively, comprising a first pressing component (21) arranged on the first pressing roller (11) and used for promoting compaction of the middle part of the raw material, and a second pressing component (22) arranged on the second pressing roller (12) and used for applying glue; The first pressing assembly (21) comprises a slide cylinder (211) arranged inside the first pressing roller (11), a push rod (212) slidably connected inside the slide cylinder (211) and provided with a joint block (2121) at its outer end, an electric cylinder arranged inside the push rod (212) and with the end of the telescopic rod fixedly connected to the bottom of the rubber mold (112), a cam (213) arranged in the middle of the first pressing roller (11) and in contact with the joint block (2121), and also comprises a pre-pressing piece (214) arranged on the outer shell plate (13) of the first pressing roller (11); The pre-pressing member (214) comprises a first hydraulic cylinder (215) arranged on a housing, a first piston (216) arranged on a telescopic rod of the first hydraulic cylinder (215), and a pressing plate (217) slidably connected to an edge of the first piston (216) and having a spring arranged between the first piston (216); A hemispherical groove is provided in the middle of the first piston (216); a slidably connected protrusion (2161) is provided at the outer edge of the groove; an exhaust hole (2162) is provided at the deepest part of the groove, and the exhaust hole (2162) is connected to an air bag (2163) provided behind the protrusion (2161); The second pressing assembly (22) comprises a slide cylinder (211) and a push rod (212) which are arranged in the same manner as the first pressing assembly (21), except that the rubber mold (112) and the support block (113) are both arranged inside the slide cylinder (211) and slidably connected to the rotating shaft (221), a track groove (222) fixed in the middle of the second pressing roller (12), a slider (223) fixed at the end of the slide cylinder (211) and fitted on the track groove (222) and moving along the track groove (222), the rotating shaft (221) is rotatably connected to the second pressing roller (12), and further comprises a bevel gear (224) arranged on the rotating shaft (221), a gear ring (225) which drives the bevel gear (224) and the rotating shaft (221) to rotate and is driven by a motor, and a rubber coating member (226) arranged on the outer shell (13) of the second pressing roller (12); A cooling mechanism (3), the cooling mechanism (3) being arranged below the device and used to accelerate cooling of the particles while ensuring the integrity of the particles, and comprising a grinding component (31) and a cooling component (32); The grinding assembly (31) is arranged on one side of the second pressing roller (12), and comprises a moving frame (311) arranged on one side of the second pressing roller (12) and slidably connected to the frame, a receiving shaft (312) rotatably connected to the moving frame (311), a grinding roller (313) arranged above the receiving shaft (312) and rotatably connected to the moving frame (311), and a driving wheel (314) that drives the sliding frame to slide back and forth linearly through a gear rack transmission method; The cooling assembly (32) comprises a feed port (321) arranged on one side of the second pressure roller (12), a spiral slide rail (322) arranged below the feed port (321), a conveyor belt (323) arranged below the spiral slide rail (322), and a fan (324) arranged below the conveyor belt (323); The conveyor belt (323) uses a mesh crawler belt for transmission, and the fan (324) is arranged under the crawler belt to blow air upwards.

2. A long-acting compound fertilizer production system according to claim 1, characterized in that: The surfaces of the first pressing roller (11) and the second pressing roller (12) are both provided with receiving holes (111) for being evenly and regularly arranged, and a hemispherical rubber mold (112) for extruding auxiliary raw materials and a support block (113) arranged at the bottom of the rubber mold (112) and used to ensure that the rubber mold (112) is formed are fixed in the receiving holes (111); It also includes a shell plate (13) arranged outside the first pressing roller (11) and the second pressing roller (12) and tightly fitted with the surfaces of the first pressing roller (11) and the second pressing roller (12), and a material box (131) respectively arranged directly above the first pressing roller (11) and the second pressing roller (12) and used for releasing raw materials.

3. A long-acting compound fertilizer production system according to claim 2, characterized in that: The glue coating member (226) comprises a second hydraulic cylinder (2261) arranged on the shell plate (13), a second piston (2262) arranged on a telescopic rod of the second hydraulic cylinder (2261), a ball (2263) arranged in the middle of the second piston (2262) and driven to rotate by a motor, a guide groove arranged on the surface of the ball (2263), a glue storage tank (2264) fixed on the shell plate (13), and a glue outlet pipe (2265) arranged inside the piston.

4. A method for producing a long-acting compound fertilizer, applied to a long-acting compound fertilizer production system according to any one of claims 1 to 3, characterized in that: The following steps are involved: Step 1, pre-pressing step, raw material 1 and raw material 2 are respectively added into a material box (131) located above a first pressing roller (11) and a second pressing roller (12), and as the first pressing roller (11) and the second pressing roller (12) rotate, the raw materials are respectively filled into the rubber mold (112), wherein the first pressing roller (11) rotates, the raw materials move to the position of the pre-pressing member (214), and the first hydraulic cylinder (215) drives the piston to move, thereby squeezing the raw materials in the rubber mold (112) of the first pressing roller (11), By setting the piston, a hemispherical protrusion is pressed out in the middle of the raw material, and the spherical position of the outer end is compacted with the protrusion position, while the periphery of the protrusion maintains a certain degree of looseness; at the same time, the second pressing roller (12) moves the raw material to press out a hemispherical groove in the middle of the raw material, and the edge position is kept loose. During the pressing, the ball (2263) rotates, and the glue storage tank (2264) transports glue liquid to the surface of the ball (2263), and the glue liquid is evenly coated on the surface of the hemispherical groove through the ball (2263); Step 2, the assembly step, the pre-pressed raw material continues to move, and when the rubber molds (112) of the two pressing rollers are butted, the push rods (212) of the first pressing roller (11) and the second pressing roller (12) push the rubber molds (112) closer to each other, and the two pre-pressed hemispherical bodies are buckled together and pressure is applied. The middle position is bonded by glue, and the loose parts on the edges are squeezed and fused together to form complete round particles. Then, the push rod (212) of the first pressing roller (11) pushes the particles completely into the second pressing roller (12), and the particles move along with the second pressing roller (12); Step three, grinding and cooling step, the particles continue to be used, and when they move to a horizontal position, the receiving shaft (312) moves and contacts the particles, and the particles rotate under the drive of the rotating shaft (221). The joints of the particles are polished by the grinding roller (313) to keep the particles in a stable shape. After the particles are polished, the receiving shaft (312) is removed, and the particles fall into the feed port (321), and move down through the spiral slide rail (322) and fall onto the conveyor belt (323). During the grinding and falling process, the fan (324) continues to blow air upward to promote the cooling of the particles.

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